Source: http://win.wizkids.com/bb/viewtopic....cf3d0aba7deca8

Setup - When you reveal forces, choose a character on your Sideline whose name matches the name on this ID Card and turn it to a starting line. That character is called an ID Character. You can't have more ID characters on your Sideline than characters on your starting force. UNIQUE.

If there are no characters over 50 points on my team, am I allowed to have an ID character on my sideline that is 51 points or more?

WK: No. If your force does not have the potential to use a game element on your Sideline without requiring your opponent to do or play something in particular, then you may not include that game element into your Sideline during force construction.

If a Title Character is called in using an ID Card's "Call in Help", would the title character get their starting Plot Points?

WK: Yes.

If I'm playing two ID cards with the same eligible character, can I have only one character in sideline chosen for both the id cards, saying as example XXS029 Sprite for both XXSX-ID001 Sprite and XXSX-ID022 Shadowcat?

WK: No. Each ID Card you include on your force must have at least one ID Character associated with it.