Of everything? When Iron Lad used the Fail-Safe Program to find me and ask me to join the Young Avengers. It was just me, Teddy, Eli, and Nate for a while. Kate and Cassie joined up a little later.

Iron Lad ended up being the younger version of Kang the Conqueror, which...worked out as well as you'd expect. We couldn't help him change his future.

[ It's moments like these when Billy realizes that his entire super heroing history is kind of depressing. ]