The ones listed above are Rush's teammates (the deuteragonists), so any type of personality is ok here, lazy or hard-working, stern or chivalrous, quickwitted or dumb... Normally I like personalities with contradiction, for example a valiant fighter who is deathly afraid of spiders, or a guy who is always rough to his male friends but immediately becomes gentleman-like when around girls...

Also I think "exceptional reactions" means a very keen sixth sense. However after carefully thinking, I've decided to change this to "a very keen hearing ability" to be more rabbit-related.