From 2011-2016, the series' sound effects were originally taken from Final Cut Pro, and sometimes SoundBible. Since 2016, the sound effects are taken from Pond5, which also where SML got several of their music and stock footage.
- Anime Big Pop Sound (Heard in the "Pokemon" series.)
- Angry Birds Red Bird Launch Sound
- Angry Birds White Bird Launch Sound
- Angry Birds Yellow Bird Launch Sound
- BeachWare, SHRIEK
- Blastwave FX, Sports - Boxing Bell Ring Three Times
- Bluezone Cimpact Sound 001 (Heard multiple times in "Junior Saves TikToK!".)
- Boo Laugh 2 (Heard in the "Luigi's Mansion" series.)
- Censor Bleep
- Cipha Sounds Air Horn (Heard in "The Christmas Special" and "First Day of School".)
- Dick De Benedictis Music (Evil Mind 3 is heard in MLSDA Episodes, "Baby Mutant Turtles" and in "Mad Cell".)
- Elektra Records, Happy Baby (Used for Shrek Jr. in "Baby Shrek Episode 2".)
- Freesound, Dun dun dun.wav
- Freesound, stomach growl-PiSh 01.wav (Heard once in "The Pizza Delivery", "Shrek's Bath Problem", "Inside Jeffy" and "Jeffy And Junior's Big Heist".)
- FxProSound - Little Baby Crying (Heard twice in "Bowser Junior's Playtime 4".)
- Hollywoodedge, Baby Laughs GigglesS PE144701 (Heard briefly once in a lower volume in "Chicken Jockey!".)
- Hollywoodedge, Bird Hawk Single Scre PE020801/Hawk Screech Single AT082901 (Heard once in a high pitch in "Jeffy's Daughter".)
- Hollywoodedge, Bull Roar Medium Pers PE022301/Sound Ideas, ANIMAL, CATTLE - INSISTENT BAWL, BELLOW, COW 01 (Heard 6 times in "Bowser Junior Gets His Nose Pierced".)
- Hollywoodedge, Cartoon Boing Jews Ha PE163801 (Heard thrice in "Jeffy Goes to the Arcade!".)
- Hollywoodedge, Cattle Cow Moo Bellow AT041601 (Heard once in "Rosalina's Parents".)
- Hollywoodedge, Dolphin Chirps Vocal PE024601/Dolphins Chirping TE015902
- Hollywoodedge, Elephant Trumpeting PE024801 (Heard once in "Black Yoshi's Kool-Aid Problem" when Black Yoshi pretends to be a Koolaidephant.)
- Hollywoodedge, Fart 1 Medium Fart Clo PE138901 (Extremely occasionally used.)
- Hollywoodedge, Fart 4 Very Short High PE139201 (Heard in "The Charleyyy and Friends Problem".)
- Hollywoodedge, Metal Creaks Machine FS015801 (Heard once in "Bowser Junior's Credit Card!".)
- Hollywoodedge, Party Favor 3 Raspy Pa AC013801
- Hollywoodedge, Punch Face Hit 4 Sharp PE100401 (Heard in early videos, including some "Mario and Luigi's and Dumb Adventures" episodes.)
- Hollywoodedge, Small Swishes Light FS048101/Sound Ideas, SWISH - ARM OR WEAPON SWING THROUGH AIR, SWOOSH 03
- Hollywoodedge, Telephone Futzed Low TE043701
- Hollywoodedge, Toilet Flush 2 Old Typ PE167401
- Hollywoodedge, Twangy Boings 7 Type CRT015901 (1st boing heard once in "The Cat In The Hat".)
- Hollywoodedge, Warning Buzzer Space PE194501 (Heard in "Black Yoshi's House Arrest" and "Brooklyn Guy's Day Off".)
- Hollywoodedge, Whistling Wind Mediu PE032901/Wind Cold Whistle BT022801 (Heard in "Delta Shrimpo".)
- Inseminoid, Sandy Scream
- IOS Camera Sound
- IOS FaceTime Calling Sound (Heard in and "Jeffy's Online School!".)
- IOS Notification Sound
- IOS Opening Ringtone Sound
- IOS Radar Ringtone Sound (Heard in "Judge Jeffy!")
- Mirkic, Baby Crying Loud
- Roblox Death Sound (Heard in "Jeffy's Bad Christmas" and Zombie Bowser!".)
- SKYWALKER LIGHTSABER SOUND (Heard in "Bowser Junior's Lightsaber!".)
- SMB 1-Up Sound
- SMB Coin Sound
- SMB Death Sound
- SMB Fireball Sound
- SMB Jump Sound
- SMB Koopa Shell/Kick Sound
- SMB Power Up Sound
- SMB Stomp Sound
- SMB Warp Pipe/Power Down Sound
- Sonic Ring
- SoundBible, Person Farting 02
- SoundBible, Rigid Fart
- SoundBible, Wet Fart Squish
- SoundDogs, Monster, Yell, Distorted Howl And Screech
- SoundDogs, Voices - Laugh, Giggle, Girl 1 (FNAF variant)
- Sound Ideas, AIR - HUGE PRESSURE BLAST, SCI FI
- Sound Ideas, AIRPLANE, JET - FAST PASS BY, LONG (Heard once in the final part of "Black Yoshi and the Birds".)
- Sound Ideas, ALARM, BURGLAR - BURGLAR ALARM, INDOORS, RISING, FALLING, FAST TEMPO, OFFICE, DIGIFFECTS
- Sound Ideas, ALLIGATOR - ADULT ALLIGATOR: GROWLING, ANIMAL, REPTILE (Heard once in "Bowser Junior's Midnight Snack".)
- Sound Ideas, ANIMAL, BULL - ROARING AND SNORTING, PROCESSED (Heard in "Bowser Junior Gets His Nose Pierced".)
- Sound Ideas, ANIMAL, GROWL - LARGE CAT-LIKE COMPLEX SOUND 03 (Heard once in "Chef Jeffy".)
- Sound Ideas, ANIMAL, MONKEY - VARIOUS SCREAMS, APE (Heard thrice in "The Caveman".)
- Sound Ideas, ANIMAL, PIG, CARTOON - SQUEALING AND SNORTING WHILE EATING, COMEDY (Heard once in "The Charleyyy and Friends Problem!".)
- Sound Ideas, ANIMAL, SCREAM - T-REX: SCREAM, DINOSAUR 01
- Sound Ideas, ANVIL - SINGLE HIT ON ANVIL WITH HAMMER, METAL 01 (Heard once in "Jeffy the Wrestler".)
- Sound Ideas, APPLAUSE, CHEERING - INDOOR: SMALL STUDIO AUDIENCE, WITH WHISTLING, HEAVY, CROWD 02 (Heard in "Jeffy the Wrestler".)
- Sound Ideas, APPLAUSE, CHEERING, CROWD - MEDIUM STUDIO AUDIENCE: APPLAUSE WITH CHEERING AND WHISTLING WITH BIG SURGE 01
- Sound Ideas, APPLAUSE, CHEERING, CROWD - SMALL STUDIO AUDIENCE: APPLAUSE AND BIG CHEER 01
- Sound Ideas, APPLAUSE, CROWD - MEDIUM STUDIO AUDIENCE: MEDIUM APPLAUSE, BUILDING IN INTENSITY 02
- Sound Ideas, AUTO, FERRARI TESTAROSSA - EXTERNAL: IDLE, ACCELERATE QUICKLY TO HIGH SPEED FROM RIGHT WITH TIRE SQUEAL, SPORTS CAR
- Sound Ideas, BABY - LAUGHING, HUMAN 02 (Used for Shrek Jr. when he laughs in "Baby Shrek".)
- Sound Ideas, BELL, SCHOOL - SCHOOL BELL: EXTERNAL: SINGLE RING (Heard in the "Bowser Junior's Summer School" series.)
- Sound Ideas, BELL, SCHOOL - SCHOOL BELL: INTERNAL: SHORT RING (Heard throughout "Y U DUMB? Elementary".)
- Sound Ideas, BIRD, CHICKEN - CHICKENS: SMALL GROUP: CONSTANT CALLS, ANIMAL (Heard once in "Mario's Christmas Tree Problem" in the "Hell's Kitchen" scene.)
- Sound Ideas, BIRD, CHICKEN - SMALL CHICKEN COOP: NERVOUS CHICKENS AND BABY CHICKS RUNNING AROUND, ANIMAL (Heard in "Who Wants to Be a Millionaire Episode 1".)
- Sound Ideas, BIRD, CROW - BLACK CROW: FLY BY WITH TWO CALLS, ANIMAL (Heard once in a low pitch in "The Bird" and in a normal pitch in "Black Yoshi's Call of Duty Loan" where it was used as a penguin sound.)
- Sound Ideas, BIRD, DOVE - ROCK DOVE: CONSTANT COOING, ANIMAL (Heard once in a low pitch in "The Bird".)
- Sound Ideas, BIRD, DUCK - MALLARD DUCK: CONSTANT CALLING, ANIMAL (Used as an ostrich sound in "Jeffy's Flu Shot" and some videos where it is used as a censor bleep; i.e. "The Date".)
- Sound Ideas, BIRD, PREHISTORIC - HARSH SCREECH 02 (Heard once in the final part of "Black Yoshi and the Birds".)
- Sound Ideas, BIRD, SPARROW - TREE SPARROW: SINGING, ANIMAL (Heard once in a low pitch in "Bowser Junior's Macaroni".)
- SoundDogs, Body Damage - Punches - Kicks - CU - Sweeteners
- Sound Ideas, BOOING, CROWD - MEDIUM STUDIO AUDIENCE: BOOING WITH ANGRY YELLING 02 (Heard once in "Mario and Bowser's Stupid and Crazy Adventure Episode 1" and "Bowser Junior's Summer Vacation".)
- Sound Ideas, CAMERA - 35 MM SLR WITH AUTO WINDER: SEVERAL SHOTS (Last shot; heard once in "Bowser Junior's Easter Egg Hunt" and "Bowser Junior Goes to the Fair".)
- Sound Ideas, CARTOON, ACCENT - BONG, HORN, SQUAWK (Heard once in "The Bake Sale".)
- Sound Ideas, CARTOON, BOING - STRING PLUCK (Heard once in "The Cat in the Hat" and "Chef Pee Pee's Cooking Sucks".)
- Sound Ideas, CARTOON, BOING - TIMPANI, LONG GLISS UP, PERCUSSION, MUSIC, DRUMS
- Sound Ideas, CARTOON, BUBBLE - SINGLE BUBBLE 01 (Heard in "Bowser Junior Loses Thomas".)
- Sound Ideas, CARTOON, POP - CORK SQUEAK AND POP 01 (Heard once in "Mario's Hair".)
- Sound Ideas, CARTOON, POP - SMALL VOCAL POP 01 (Heard in the "Luigi's Mansion" series whenever Luigi sucks up the ghosts.)
- Sound Ideas, CARTOON, SQUISH - BORK (Heard thrice in "Chef Pee Pee's Cooking Sucks".)
- Sound Ideas, CARTOON, WHISTLE - FALL WHISTLE, MEDIUM 01 (Heard once in "The Cat In The Hat".)
- Sound Ideas, CASH REGISTER - ANTIQUE: SINGLE KEY WITH BELL, FAST (Heard in "Junior's Creation" and "Jeffy's Ball Pit".)
- Sound Ideas, CASINO, SLOT MACHINE - BET FIVE COINS, PULL HANDLE, WIN CREDITS, GAMBLING (Heard once in "Smart Jeffy".)
- Sound Ideas, CAT, DOMESTIC - PURRING, ANIMAL (Heard once in "Stuck in a Tree".)
- Sound Ideas, CHEERING, CROWD - MEDIUM STUDIO AUDIENCE: FEMALE: CHEERING 03 (Usually heard when Charleyyy introduces himself.)
- Sound Ideas, CHILDREN, CROWD - SMALL STUDIO AUDIENCE OF CHILDREN: BIG CHEER, CHEERING 01 (Heard once in "Mario and Bowser's Stupid and Crazy Adventure Part 1" (AKA: "A New Beginning"), "Bowser Junior's Happy Meal", and at the beginning of the "Doofy the Dragon" segments, and in "The Charleyyy and Friends Problem".)
- Sound Ideas, CLOCK, CUCKOO - STRIKE TWELVE O'CLOCK (3 strikes only; heard once in "Cody's House".)
- Sound Ideas, COW - SINGLE MOO, ANIMAL 02 (Heard once in "Rosalina's Parents".)
- Sound Ideas, CROWD, CHEERING - CHEERING CROWD
- Sound Ideas, DOG, MIXED BREED - LARGE DOG, GROWLING, PULLING AT OBJECT, ANIMAL (Heard in "Shrimpo Hunter Episode 3".)
- Sound Ideas, DOG, MIXED BREED - LARGE DOG, WHINING, ANIMAL 02 (Heard once in "Bowser Loses His Voice".)
- Sound Ideas, DOG, POMERANIAN - SMALL DOG, BARKING, ANIMAL (Heard once in "Chef Pee Pee's Mistake".)
- Sound Ideas, DOG, ROTTWEILER - MEDIUM DOG, BARKING, ANIMAL (Used for Chompy when he barks.)
- Sound Ideas, DONKEY - C.U. BRAY, ANIMAL (Heard once in "Jeffy's New Toy".)
- Sound Ideas, DOOR, BELL - ELECTRIC DOORBELL: RING 02 (Heard once in "Jeffy Solves World Hunger!" and "Marvin's Mole Problem!".)
- Sound Ideas, DOOR, BELL - SINGLE RING
- Sound Ideas, DOOR, KNOCK - WOOD DOOR: KNOCKING
- Sound Ideas, DRUMS - ACCENT, MUSIC, PERCUSSION 01 (Series 6000)
- Sound Ideas, ELECTRICITY - HIGH VOLTAGE ELECTRICAL ARCING 01 (Heard once in "SUPERPOWERS 3".)
- Sound Ideas, ELECTRICITY - JACOB'S LADDER: ELECTRICAL HUM, BUZZ, ARCHING
- Sound Ideas, ELECTRICITY, SPARK - HIGH VOLTAGE SPARK, ELECTRICAL 12 (Heard in "Pokemon Part 5".)
- Sound Ideas, EXPLOSION - LARGE EXPLOSION 03 (H-B) (Heard in "The PowerPuff Jeffy's".)
- Sound Ideas, FART - LARGE FART, HUMAN 03
- Sound Ideas, FART - LARGE FART, HUMAN 05
- Sound Ideas, FART - LARGE FART, HUMAN 08
- Sound Ideas, FART - MEDIUM FART, HUMAN 01
- Sound Ideas, FLY - SINGLE HOUSE FLY: HEAVY BUZZING, ANIMAL, INSECT (Heard once in "The Birds and the Bees".)
- Sound Ideas, FOREST, ASIA - ASIA: DAYTIME AMBIENCE, BIRDS 01 (Heard in "Black Yoshi and the Birds Episode 1".)
- Sound Ideas, FOREST, DAY - GENERAL AMBIENCE: BIRDS CLOSE, DISTANT (Heard in "Ghost Shrimpo".)
- Sound Ideas, FROG - STRIPED CHORUS FROG: CALL, ANIMAL, AMPHIBIAN (Heard in "Ghost Shrimpo".)
- Sound Ideas, GAS, EXPLOSION - GASOLINE PUMP EXPLOSION
- Sound Ideas, GOLF - CLUB SWING HITS GRASS, SPORTS 02
- Sound Ideas, GORILLA - LARGE GORILLA HOOTING, ANIMAL, APE 01 (Heard once in "Jeffy Goes to the Zoo".)
- Sound Ideas, GLASS, DOOR - WOOD FRAMED GLASS DOOR WITH BELL ON SMALL GENERAL STORE: INTERNAL: OPEN AND CLOSE 01 (Heard once in "Brooklyn Guy's Dad".)
- Sound Ideas, GUN, HAND GUN - .44 MAGNUM: SINGLE SHOT 01
- Sound Ideas, HARP - CHORDAL GLISS, UP AND DOWN, REPEATING, MUSIC 01 (Heard once in "Bowser Junior's Lottery Ticket".)
- Sound Ideas, HARP - CHORDAL GLISS, UP, MUSIC (Heard once in a low pitch in "The Birds and the Bees".)
- Sound Ideas, HARP - MAJOR CHORD ARPEGGIO, UP AND DOWN, MUSIC (Heard once in a low pitch in "The Birds and the Bees".)
- Sound Ideas, HORN, BOAT - TUG BOAT HORN: ONE LONG AND TWO SHORT BLASTS (Heard in "The Film Project".)
- Sound Ideas, HORSE - EXTERIOR: WHINNY, ANIMAL 04 (Heard once in a low pitch in "Bowser's Salad Wrap".)
- Sound Ideas, HORSE - INTERIOR: WHINNY, ANIMAL 02
- Sound Ideas, HORSE - INTERIOR: WHINNY, ANIMAL 04 (Heard once in a low pitch in "Bowser's Salad Wrap".)
- Sound Ideas, HOSPITAL - HEART MONITOR: HEART FAILURE, CONSTANT TONE (Heard once in part 5 of "Black Yoshi and the Birds".)
- Sound Ideas, HOSPITAL - HEART MONITOR: MONITORING, CONSTANT BEEPS (Heard once in part 5 of "Black Yoshi and the Birds".)
- Sound Ideas, HOSPITAL - INTENSIVE CARE ROOM: HEART MONITOR, VENTILATOR, E. E. G. AMBIENCE (Heard once in "Bad Super Bowl Commercials".)
- Sound Ideas, HUMAN, BABY - COOING 01
- Sound Ideas, HUMAN, BABY - COOING 02 (Heard in "Baby Shrek" and "Rosalina's Parents".)
- Sound Ideas, HUMAN, BABY - CRYING (1st half heard once in "Baby Shrek".)
- Sound Ideas, HUMAN, BABY - EIGHT MONTH OLD BABY: CRYING (Heard once in "The Baby Project" and quadrice in "Black Yoshi's Kids".)
- Sound Ideas, HUMAN, BABY - EIGHT WEEK OLD BABY: CRYING
- Sound Ideas, HUMAN, FART - MEDIUM FART, COMEDY, CARTOON 02
- Sound Ideas, HUMAN, GROAN - GROAN AND MOAN: FEMALE (Heard once in "Bowser Junior's Breakfast".)
- Sound Ideas, HUMAN, HIT - HARD PUNCH 01
- Sound Ideas, HUMAN, HIT - HARD PUNCH 02
- Sound Ideas, JUNGLE, SOUTH AMERICA - SOUTH AMERICA: MORNING AMBIENCE, BIRDS, INSECTS (Heard in "Black Yoshi and the Birds Episode 1".)
- Sound Ideas, LAUGHTER, APPLAUSE, CROWD - MEDIUM STUDIO AUDIENCE: LAUGHTER WITH APPLAUSE 05 (Heard in the "Charleyyy and Friends" segments.)
- Sound Ideas, LAUGHTER, CROWD - MEDIUM STUDIO AUDIENCE: FEMALE: LAUGHTER (Heard in the "Charleyyy and Friends" segments.)
- Sound Ideas, LAUGHTER, CROWD - MEDIUM STUDIO AUDIENCE: HARD LAUGHTER 04 (Heard in the "Charleyyy and Friends" segments.)
- Sound Ideas, LION - LION: SINGLE ROAR, ANIMAL, CAT 02 (Heard once in a low pitch in "The Bird".)
- Sound Ideas, MONSTER - ROAR, ANIMAL 05
- Sound Ideas, MUSIC, BOX - 1905 REGINA MUSIC BOX: PLAY SONG
- Sound Ideas, MYSTERY ACCENTS - MYSTERIOUS SLIDE ACCENT
- Sound Ideas, MYSTERY ACCENTS - MYSTERY CHORD ACCENT 4
- Sound Ideas, PUNCH, BODY - ARM SWING AND PUNCH, HUMAN 06
- Sound Ideas, PUNCH, FACE - ARM SWING AND JAW SOCK, HUMAN 01
- Sound Ideas, RICOCHET - CARTOON RICCO 07 (Heard in several episodes of "Mario and Luigi's Stupid and Dumb Adventures".)
- Sound Ideas, RUN, CARTOON - TEMPLE BLOCK RIOT, LONG/MEDIUM/SHORT (Heard in "The Charleyyy And Friends Problem!" during the animated Charleyyy And Friends Show segment by Nicktendo.)
- Sound Ideas, SCI FI - HEAVENLY BODY FALLS (Heard often in the 3rd season of "Mario and Luigi's Stupid and Dumb Adventures".)
- Sound Ideas, SCRATCH, RECORD - BIG RECORD SCRATCH, COMEDY, CARTOON (Heard once in "Loch Ness Monster", "Fat Jeffy", "Chef Pee Pee Goes to Hollywood", "The Devil's Son" and "The KFC Competition".)
- Sound Ideas, SCRATCHES - RECORD ALBUM SCRATCH 02
- Sound Ideas, SCRATCHES - RECORD ALBUM SCRATCH 05 (Heard in a few episodes of "Mario and Luigi's Stupid and Dumb Adventures".)
- Sound Ideas, SIREN - AMBULANCE, PASSES BY, CITY AMBIENCE, POLICE (Heard once in "The Mustache Problem".)
- Sound Ideas, SIREN - 'WAIL' SIREN, POLICE, AMBULANCE, FIRE TRUCK 01
- Sound Ideas, SIREN - SIREN, POLICE, AMBULANCE, FIRE TRUCK 01
- Sound Ideas, SPECIAL FX - WILD PIG SNARL (Heard in "Shrimpo Hunter Episode 3".)
- Sound Ideas, STEREO, TURNTABLE - NEEDLE SCRATCHING RECORD, RECORD PLAYER 02 (Heard once in "Mario's New Girlfriend".)
- Sound Ideas, SUSPENSE ACCENTS - ORCHESTRAL BUILDING SUSPENSE ACCENT 6
- Sound Ideas, SUSPENSE ACCENTS - ORCHESTRAL SUSPENSE ACCENT 1
- Sound Ideas, SUSPENSE ACCENTS - ORCHESTRAL SUSPENSE CLIMAX ACCENT
- Sound Ideas, SUSPENSE ACCENTS - ORCHESTRAL SUSPENSE STAB 3
- Sound Ideas, SUSPENSE ACCENTS - ORCHESTRAL SUSPENSE STAB 5
- Sound Ideas, SUSPENSE ACCENTS - ORCHESTRAL SUSPENSE STAB ACCENT 3
- Sound Ideas, TAPE, CUEING - MUSIC: CUEING ON PROFESSIONAL RECORDER 01 (Heard in "Netflix and Kill".)
- Sound Ideas, TELEPHONE, CELLULAR - DIGITAL FLIP PHONE: RING 1: SIX RINGS (Heard in "Chef Pee Pee Quits Part 1".)
- Sound Ideas, TELEPHONE, ELECTRONIC - ELECTRONIC 1: RINGING, OFFICE (Heard in "Chef Pee Pee Quits Part 5".)
- Sound Ideas, THUNDER - THUNDER CLAP AND RUMBLE, WEATHER 01 (Series 6000) (Heard in the "Luigi's Mansion" series.)
- Sound Ideas, TRAIN, STEAM - WHISTLE, MANY BLASTS, CLOSE UP (Heard once in "Bowser Junior Gets His Nose Pierced".)
- Sound Ideas, TRUCK, MACK TRANSPORT - EXTERNAL: AIR HORN, DOUBLE BLAST (Heard in "Shrimpo Hunter Episode 3".)
- Sound Ideas, UNDERWATER - GENERAL UNDERWATER AMBIENCE WITH PULSE (Heard in "Jeffy's Invention".)
- Sound Ideas, WHIP - BULLWHIP: SINGLE CRACK 02 (Heard quadrice in "Chef Pee Pee's New Job!".)
- Sound Ideas, WOLVES - TIMBER-WOLVES: HOWLING, ANIMAL, WOLF 02 (Heard in "Mario and Luigi's Stupid and Dumb Adventures Season 2 Episode 9".)
- Sound Ideas, ZIP, CARTOON - BIG WHISTLE ZING OUT (Heard once in "Sicken".)
- Sound Ideas, ZIP, CARTOON - HOYT'S ZIP (Heard once in "Scream".)
- Sound Ideas, ZIP, CARTOON - QUICK WHISTLE ZIP OUT (Heard once in "The Bet".)
- Unknown Baby Crying Sound 3 (Heard once in "Mario and Bowser's Stupid and Crazy Adventure Episode 6" when Peach gives birth to Baby Peach.)
- Video Helper, Distorted Long Hit, Alien Scream!
- WTF Boom (Heard once in "Stride Mystery Gum".)
- ZapSplat, Baby, 3 Months Old, Crying (Heard in "Baby Shrek".)
- ZapSplat, Baby, Light Crying, 4 Months Old (Heard in "Baby Shrek".)