"Really? Wow. My mom already knew about you--him--and me, but at least I got to come out to her myself. Of course, I tried to keep the 'I'm a teenage, spell-slinging superhero' part out of the discussion, but the Super-Skrull kind of outed me in that sense when he busted into the place and killed your...Teddy's mom."
He's about to agree with Teddy about Avengers Mansion--If nothing else, it's a short jump from there to Dr. Strange's place--when his worst nightmare comes to life.
"Shit! He's found me!"
Wolverine. The one Avenger Wiccan fears above all others. While Spider-Man and Cap were trying to reach out to him, and Ms. Marvel and Iron Man wanted him 'secured' or 'contained', Wolverine had calmly popped his claws and all-but-ordered the other Avengers to kill him the first chance he'd gotten.
My powers went out of control once...once!...and that's his first answer. No offer of help, no reference to Xavier's, just 'kill 'im' and that was it. Well, I'm not sticking around for it.
Instantly, Billy's in the air...only to come back down to Earth, hard. Not only is his face still smarting from Hulkling's kick, but his concentration is completely shot by the bombshells, revelations, and sudden surprises he's had today so far.
"Come on, we gotta go!"
If he can't fly, he might as well run. But he can't just leave Theo there.