Grizz would play on his 3DS quite competitively, constantly moving his arms around or huffing with anger every time he lost, or had to switch to a new game to keep his attention span going.

You enter the living room, but he doesn't acknowledge you. He would if he wasn't so occupied, though! You continue to walk around, seemingly looking for something or just wandering around out of some incurable boredom. You wanted to talk to someone, but Grizz was playing on his 3DS, Ice Bear was cooking in the kitchen and Panda was just in his room, reading manga or doing something cringe on his phone, presumably.

You wander over to Grizz, standing for a few seconds before you sit next to him. He grumbles. Not at you, but out of some sudden anger or irritation at whatever he was playing.

"Oh, hey, dude! What'cha doin'? ..."

He asks you, not looking up from the game yet. He was focused, but would totally put it down if you needed him to. He'd probably be better off with a break, really. This game has worn him out.