Fistrick is an antagonist from the TV series, Ben 10: Omniverse, who first appeared in the episode, A Jolt from the Past.
A Jolt from the Past
Ben discovered that the aliens, Megawatts needed help from him. Ben followed them and the reason they need help is because their fellow alien species got kidnapped by Fistrick in order to use them as batteries for his mechanical armored suit. Ben transformed into Gravattack and defeated Fistrick and freed the Megawatts.
Bros in Space
Fistrick trained the Muroids, which are the native animals of the planet to steal the fruits in order to use those as a fuel for a weapon to destroy a planet. Ben tilted the weapon and the blast missed.
He appeared as one of the minor antagonist that will steal the dwarf star.
No Honor Among Bros
He escaped from the prison cell of the Plumber Headquarters alongside Fistina in order to participate golden fist tournamnet.
Universe vs. Tennyson
Fistrick appeared as a minor antagonist.
Ben transformed into Wildvine in order to join Fistrick's gang undercover. Later as they all go to space, Fistrick knows that Wildvine is Ben and left hem, but escaped. Ben transformed into Molestache and defeated him.
Fistrick appeared as a punk criminal with a black skull shirt, skull face paint and orange mohawk. He even had tattoos. He resembles Bane from DC comics.