Bonk, obviously. Anyone who says otherwise is doing it wrong. =P
As for me, i'd go with Sora just because it is the only one that sounds like a real name. I always give my characters actual names rather than phrases, random words, or anything else that you wouldn't actually call someone. Just doesn't sit right with me.
Astro will always be the Jetsons' dog to me, hard to imagine that as anything else.
I like ponies and I really don't care what you have to say about that.
Not sora because thats the main character in the Kingdom Hearts series, Bonk is my favorite just because odd names like that are awesome, My DK's name is Duk and im a huge fan of that name
Playing since '04