He's bored. He's at a teen superhero get-together and he's bored out of his mind. All his friends are busy talking amongst themselves or doing something that he didn't feel like doing. He doesn't seem interested in any of them or what they're doing.

However... He does love to mess with you when he's bored. Frankly he just likes to mess with you period. Not because he wants to be mean but actually the opposite because he adores you. He quickly zooms over with his superspeed and steals your drink causing you to pay him some attention. He loved your attention so getting it made him feel good. He smirked at you from where he sat on the couch and sipped on your drink, his eyes not leaving yours. His smirk never leaving his face even for a second.