Nickelodeon's been around for forever and a day and has produced some true staples of our childhood. It launched the careers of so many faves — including Ariana Grande, Kenan Thompson, and Amanda Bynes — and gifted us with amazing catchphrases like "Hug me, brotha!"
But several sneaky celebs guest-starred on other Nickelodeon shows before, during, and after filming their own series. Expand your Nick knowledge with these stars' various roles, excluding actors playing themselves and crossover episodes.
[Note: Nickelodeon and MTV News are both owned by Viacom.]
Sam Puckett from iCarly and Sam & Cat once kissed Dustin on Zoey 101; played True Jackson's archenemy, Pinky, on True Jackson, VP; and freaked out Tori Vega on Victorious.
Mark Del Figgalo from Zoey 101 guest-starred on the Victorious series finale as the guy in the Pajelehoocho commercial.
Eight years after finishing All That, De Sena guest-starred as a texting competition judge on Sam & Cat.
In between filming Kenan & Kel in the ’90s and Game Shakers in the ’10s, Mitchell played rapper Peezy B on Sam & Cat and a sensei on The Thundermans.
This All That star is a major Nickelodeon veteran. He guest-starred on The Secret World of Alex Mack, Drake & Josh, and Sam & Cat. Server also appeared on Kenan & Kel, 100 Deeds for Eddie McDowd, AND Ned's Declassified School Survival Guide. Damn, Ear Boy!
While in the middle of filming All That, Brummet guest-starred on Drake & Josh as Drake Parker's inappropriately laughing girlfriend, Kelly Hayfer.
The All That star who gave us one-half of the " Sugar and Coffee" sketches guest-starred on Game Shakers in 2016 as a teacher educating kids about "King Fuhd," a parody of King Tut.
Foiles's "Sugar and Coffee" sketch partner on All That appeared on both The Secret World of Alex Mack and The Amanda Show.
The All That actor who starred with Kenan Thompson in the " Inconvenience Store" sketches also appeared on Kenan & Kel and Taina during the same time.
After playing Tammy, an exchange student from Tennessee, on The Amanda Show, Snow guest-starred on episodes of Victorious and Sam & Cat. She was even Chase's new love in What Did Zoey Say?, the 10-years-later follow-up to the Zoey 101 time-capsule episode. Fun fact: Snow is a casting director for tons of Nick shows.
Before he became Andre Harris on Victorious, Thomas had guest-starring roles on Just for Kicks, Just Jordan, and iCarly. Three years after he played Harper on iCarly, Thomas returned to the show, but this time as his Victorious persona.
The Victorious and Zoey 101 star worked on both True Jackson, VP and iCarly, playing a girl who wants to fight Carly Shay on the latter.
Jade West from Victorious once guest-starred on Big Time Rush as Heather Fox, James and Carlos's old camp friend.
Obnoxious Trina Vega on Victorious played Chase Matthews's snotty girlfriend, Rebecca, on Zoey 101, and guest-starred on the Nora Dershlit episode of iCarly. She reprised her Victorious role on another iCarly episode a year later.
Josh Nichols's archenemy turned girlfriend, Mindy Crenshaw, on Drake & Josh was also a P.C.A. student named Stacy on Zoey 101.
Drake & Josh's Premiere manager Helen guest-starred on True Jackson, VP as Amanda Cantwell's temp, and on iCarly as an uncredited art class student.
Before Trainor guest-starred on Victorious as his iCarly persona, Spencer Shay, he played an uncredited audience member on an early episode.
Wacky Lewbert from iCarly is another big Nickelodeon veteran. He's been the Crazy Hat Man on The Amanda Show, a sassy worker at a dance competition on Drake & Josh, and Schwahbbit on Henry Danger. Plus, Rowley played a homeless man who ended up with Moody's dad's severed toe on " Moody's Point," as well as various characters on All That.
The Just Jordan star guest-starred on Ned's Declassified School Survival Guide as James K. Polk Middle School's new class clown a year before his show aired.
Before she was Lulu Johnson on True Jackson, VP, Argota played a girl named Kathy on an early iCarly episode.
The Unfabulous and Big Time Rush actress crushed on Larry Garcia on The Brothers Garcia, and later played Fake Carly on iCarly.
The Big Time Rush star guest-starred as Justin, a cocky member of the band Night Lizard, on School of Rock.
Before joining Big Time Rush, Maslow guest-starred on iCarly as heartthrob Shane, a boy who Carly and Sam fight over.
The Big Time Rush alum played King Bee on two episodes of Ned's Declassified School Survival Guide, and later stopped by The Thundermans as a tech rider.
- The Thundermans
- The Brothers Garcia
- 100 Deeds for Eddie McDowd
- Sam & Cat
- Henry Danger
- Nickelodeon Nostalgia
- Yvette Nicole Brown
- Nick Cannon
- Malese Jow
- Miranda Cosgrove
- Austin Butler
- Nathan Kress
- Josh Server
- Carlos Penavega
- Kel Mitchell
- Lisa Foiles
- Allison Scagliotti
- Jeremy Rowley
- Daniella Monet
- Elizabeth Gillies
- Leon Thomas III
- Victoria Justice
- Jamie Snow
- Jack DeSena
- Ashley Argota
- Jerry Trainor
- Jennette McCurdy
- Chelsea Brummet
- Kyle Sullivan
- James Maslow
- Kendall Schmidt
- All That [TV Series]
- The Secret World of Alex Mack [TV Series]
- Ned's Declassified [TV Series]
- Zoey 101 [TV Series]
- Kenan & Kel [TV Series]
- The Naked Brothers Band [TV Series]
- Victorious [TV Series]
- Unfabulous [TV Series]
- Just Jordan [TV Series]
- Drake & Josh [TV Series]
- iCarly [TV Series]
- Taina [TV Series]
- True Jackson, VP [TV Series]
- Big Time Rush [TV Series]