Ok, if your using generic keywords you need 1 for every 100 pts ....if using non-generic keywords you need 1 for every 150. The venue I play at we use 500 pt force. Now with the AA obviously Sinestro Corps is on every ones mind.....now Can you use say Superman Prime, Lyssa Drak, Amon Sur, and some meat sheild to round out your team. Now does the meat sheild need to have the Sinestro Corps keyword or not. Thanks.

Excluding bystanders, all figures must possess the keyword.

And that team would not be a theme for 500 points.

500/150 = 3.333 -> round up and you must have 4 figures.

And on a 500 point force you need four figures with a non-generic keyword to have it count as a theme team.

wouldn't you normally round up at 3.5?

This is Heroclix, not Math. Any fraction rounds up.
3.000000000000000001 -> 4

thanks.....