Generally speaking I tend to end up more interested in characters that are either antagonists or jerks. Especially when I don't personally have to hate them because the rest of the cast already does. So basically he pretty much hit my pings what hard the first time he showed up! Also he's just kind of fun to watch in how he interacts with the rest of the Five.

So yeah, it was pretty much a kneejerk 'ooh shiny' reaction, and as a bonus his voice turns out to be pretty easy to write. /o/