Well, it began because Castiel was binging on hamburgers one episode, hence CastielsBurgers...I also had in mind that I was going to get pounded by the monsters so I'd be burger meat, and figured it was a fitting name.

As for CastielsFries, it's because I plan on making an Explorer and focusing on either a bow or a crossbow, with the 'Fries' essentially being the arrows, thus, CastielsFries.

If I'm ever making another character, I might go for a warrior or an Engineer, in which case I might be CastielsSteak (twin-swords, slicing things up into steaks) and CastielsSandwich (a deluxe sandwich, which has everything in it since Engineers seem so multitasking), respectively.
Not sure, besides having a different skill set? I dunno.

I'm still focused on my Soul Reaper at the moment.