Name: Aiden
Age: 38
Role in family: Uncle (either Mother's or Father's brother, dunno yet)
Personality: Aiden is a lighthearted, friendly, cheery and helpful person from outside, but also has a melancholic/depressive side deep inside (probably because of all the things he knows, but doesn't want to, due to his powers).
Supernatural ability or species:
Nigh Omniscience - Aiden knows ALMOST everything. Still, he doesn't know the details. Also can detect most lies.
Temporal Cognition - Aiden can even determine the exact time an event has taken place or will take place, or how long it took or will take (as long as he knows the event has happened or will happen, which is a blessing and a curse at the same time)
Time Acceleration - Aiden can speed up time for himself or others up to practically light speed.
Time Reduction - Aiden is capable of slowing down time to various degrees, this could mean slowing time around a single target or affecting everything but the user. The user can also slow down opponents to avoid attacks and dampen movements.
Time Stop - Aiden is capable of stoping the time
Other: Always carries his smartphone along and never takes off his cap (sort of habit)
Name: Yukio
Age: 19
Role in family: orphan, got picked up by Aiden for now
Personality: shy at first and talks little when around persons he doesn't know well, once he gets comfortable with someone he's a friendly, helpfull and sensitive person
Supernatural ability or species: Static Ice-Make - He can create ice at his will shape it into objects, but only inanimate objects or weapons
Other: he can't really remember of his past, Aiden found him and picked him up, he gave Yukio his name which means
'Snow Child' probably because of his powers.
((I think this should do it, did I miss anything?))