APTX-victim:
I'd be Frisbeegolf fanatic who just happens to snoop dark alleys at the wrong time.
I'd have come to Tokyo to check their frisbeegolf parks and after checking them out I'd accidentally see what I'm not supposed to see but because Conan was nearby there was murder and police everywhere so the BO dudes gave me and other dude the APTX and he would die and I'd shrink...and then Conan finds me and takes me to Agasa...
and then I'd totally be with them...
oh I'm 21,male,martial artist and really good at throwing flat things (cards,discs,plates etc)
I'm smart enough to figure out some tricks but I'm not very good at detective work so I'd mostly stay on background and play with Detective boys...as I'm quite childish and AD/HD...(but I'd not not Split-personality like I have in RL)