Tony is a Romanian savant and thief.
He damaged his leg, so he was allowed to work as the 'door man' at the Community's headquarters.
Tony lets Phoenix in after she doesn't come back with any loot from her 'target'. Tony is used as a hostage against Phoenix, the Seer allows Unicorn to use his ageing powers to make Tony 10 years older.
After Unicorn ages him, his hair turns white.