He is in his chair looking at the huge computer screen in his Batcave with his dog Ace, focused on how Terry fights the Dee Dee twins, when suddenly the door opens and he watches you enter, probably to check with your own eyes the 'rejuvenation' that he did just 2 days ago

"ah, hello... You came to see, huh?"

His lip curls into a small smile, barely visible under the shadow of his messy bangs, his jacket matches his black pants and black high-collared shirt