Leonard and Ty
"I'm sorry about your brother," Leonard replied quietly. "I'm sorry you had to be there to watch him die." Leonard could relate only in the moments he watched his father beat his sister. He remembered when Mick had been Chronos and threatened to kill Lisa over and over in front of him. When his father used Lisa as a pawn to get him to steal for him. All moments he'd felt fear he'd never experienced outside of that.
Then, on the flip side, he could kill his own father without feeling anything.
The thief was caught by his admission and for a moment didn't say anything. Powers were not something unfamiliar to Leonard. "Powers are not something new to me, but that one sounds like a particular useful one to have."