...You know, this is probably cheating slightly, but I'm going to have to answer Ry, the Gyarados he inherited from Ferris (who actually named the poor thing after him because she is herself). I mean, it's more of a "which of his mons is most like him" type thing, but. Ry is super lazy and just wants to flop all the time, despite his intimidating appearance and the general attitude that's typical of the species - he has a lot of power but hates using it. Which, of course, is kind of a reflection of Ryner's own attitude as the King of Afternoon Naps.

Magikarp and Gyarados actually make a rather nice metaphor for Alpha Stigma bearers like Ryner, honestly. You've got a fish that everybody looks down on, which transforms into a terrifying beast with anger problems. (Espurr is just as good a metaphor, but as it's not available yet...) And Ryner has a soft spot for Magikarps partially because of it - he just sees peaceful fish that don't fight, not useless wastes of space or investments in ticking time bombs.