Call me crazy, but that is exactly what I will try to field, and I also will be packing Malice and Alpha Strike, just in case.

Ok, you're crazy! But, so am I!

I am going to run a GL Corps team, and I am going to spend the next few weeks play testing it, admitedly I am more worried about the Big G, and Starro then Anti-Monitor at the moment, but thats just cause I haven't played the Anti-Monitor yet, but I will be ready for him!

Put Monster Hunter on your main attackers. If you absolutely know you are going to be facing Colossals, then for 3 points it's a bargain to beef up your character's damage and attack.

1 - Emerald Empress veteran + TK + Compel = 8 damage for turn
2 - Protected on EE and repeat next turn.
3 - A LOT OF POG!!!!!
4 - A Suicide Squad member.
5 - PC figures to land the attack.
6 - Mind Controller fig.

My two cents.

Make a blood pact with everyone not to play him?

Or a Pizza pact. What nerd can resist the power of pizza?

If structural integrity field is still ok to play, then a SIF in the middle of the board. when anti moniter comes close to it, tk up a shield disruptor and Use a tomar rei with a perplexed up range to take shots at him. or E-2 supes and someone with contingency plan and another with perplex and up his range to a 13. this leaves you with a few other pieces for support. though you will need lots of healing and lots of prob.

edit: what are his special powers?