He's a covert serial killer, but he usually kills in other towns to avoid raising too much suspicion.
He is reserved and shy, a little immature, has constant speech tics and tries to appear gentle (he comes across as somewhat silly and awkward), he is usually quite enthusiastic and extremely obsessive (only with people he is really interested in or likes). (He was bullied, and for this reason some mockingly nicknamed him "Ticci Toby").
Frequently clears his throat and stutters into bursts; tries to sound gentle, then gets oddly enthusiastic when he feels safe.
Their motivation for murder may be primarily due to having felt hatred or disgust towards the victim (for categorizing them as "bad") or due to something that triggered some obsession of theirs
