Phil Matibag
Phil Matibag is one of the two main protagonists of the critically panned animated series, The Nutshack.

Although he normally has a slim average build, he gained a more muscular yet lean physique in 4 episodes: TT Boy and Kid Utot, El Bombadero, Slasher, and WTF (the series finale).

In TT Boy and Kid Utot and Slasher, he's more muscular due to being the superhero, TT Boy while in El Bombedero and WTF, he dies and is resurrected by Angel which unleashes his inner Mexican, in this case a masked wrestler.