Frankenstein Transparent.gif



Sick frankenstein.png

Species: Monster
Hair color: Black
Eye color: Black
Personal Information
  The UG RV
His Science Lab
  Uncle Grandpa
Belly Bag
Production Information
First Appearance:
  "Secret Mountain Uncle Grandpa"
Voiced by:
Mark Hamill

Frankenstein is a recurring character of Cartoon Network's series Uncle Grandpa. He lives in a laboratory within the RV. He is voiced by Mark Hamill.

Physical Appearance

Frankenstein is a big monster with black eyes, black hair, and green skin. He wears a yellow shirt under a red jacket that is buttoned up and a pair of black slacks.


He is Uncle Grandpa's assistant who does everything Uncle Grandpa needs to get done. He only talks in loud grunts.


Uncle Grandpa

Uncle Grandpa and Frankenstein both have a good connection with each other. In Tiger Trails Uncle Grandpa needed some Frankenstein Juice to pour on the ground to revive the dead pets and Frankenstein provided Uncle Grandpa the juice. In Body Trouble Frankenstein gave his body to Uncle Grandpa when he needed a new one to show off to Belly Bag. In The Origin of Frankenstein, he's responsible for frying his brain and making him stupid, he's also Uncle Grandpa's phone charger.

Belly Bag

Frankenstein lives in his castle that's inside Belly Bag as shown in Sick Bag, what happens to Belly Bag also happens to Frankenstein such as getting sick. In Body Trouble Belly Bag got mad at Uncle Grandpa while he was using Frankenstein's body.

Pizza Steve

Pizza Steve and Frankenstein don't really interact much with each other. In Haunted RV, Uncle Grandpa had switched their brains at the end of the episode and Frankenstein's brain was put in Pizza Steve's body. In the short after Uncle Grandpa Retires they play a twister-like game with each other and the rest of the gang.

Mr. Gus

As seen in the short after Uncle Grandpa Retires, Frankenstein helps Mr. Gus by letting him ride on his back when Mr. Gus found the ground to be too hot on his feet. Later on in the short, Mr. Gus had Frankenstein climb on his back to try and capture the weird fuel as a sign of teamwork.

Giant Realistic Flying Tiger

Frankenstein is usually seen riding Tiger just like anyone in some episodes such as Shower Party and in the short after Uncle Grandpa Retires, really Tiger is just a mode of transport for Frankenstein.

Tiny Miracle

Frankenstein tried to get Tiny Miracle unstuck from the big orb of weird in the short after Uncle Grandpa Retires. They show teamwork just like with any in the gang.

Evil Wizard

In Uncle Grandpa Retires, Frankenstein needed electricity for his vehicle to power up, he grunted and Evil Wizard provided Frankenstein with the electricity he needed for the race.


Gallery Link.png


  • Frankenstein is a parody of Frankenstein's Monster from a famous book called Frankenstein by Mary Shelley.
    • Similarly, there was a movie made from the book with the same name produced by Universal Studios starring Boris Karloff as Frankenstein's Monster.
  • He made a cameo in "Charlie Burgers" where he is stuck on the balloon.
  • He made a cameo in "Grounded", and could be seen in the first part of the party.
  • He can drive as seen in Uncle Grandpa Retires.
  • His creator, Dr. Frankenstein calls him by the name of "Francis".
  • He was designed to be the most intelligent being ever, before Uncle Grandpa fried his brain.





v - e - d Characters

Uncle GrandpaBelly BagPizza SteveMr. GusGiant Realistic Flying Tiger
Tiny MiracleBeary NiceHot Dog PersonCharlie BurgersRemo's DadFrankensteinEvil WizardXarnaJudy JonesSamanthaWeird ManDirtbagCrazy BabyUle Gapa
Ham SandwichRemoBelly KidMelvinEricMaryDennisGuillermoSusieAdamAustinAkiraKevin E. PeepantsRileyJackieSally SmithSandyTommyJosiePhillipEmilyJessicaSethCooperJimmyThiagoFrançoisIsabellaLizzyChetJoeyZekeVirginiaKimmyRickyWenGrantSamir
Mooon ManSkeletonyPriscilla JonesCheesepuff MikeSanta ClausLawrenceMouseNathanNubert NimboPurple AliensWallace T. GermbugPal.0Bottom BagNacho CheeseEaster BunnyMessy BessyCrispin MulcahyDr. FrankensteinLeprechaunJoey the KangarooJerky JasperPrincess SparklehorseThe Tooth FairyLil' MacCupidDr. Ice CreamMiltonBoogie ManUncle Grandpa's Uncle GrandpaSketchy StanleyDeep Dish DaveSun

Community content is available under CC-BY-SA unless otherwise noted.