I am a noob to this game, so can anyone tell me how I found out how a character is indomitable? Is it on the character card? CA023 Nick Fury is mentioned as being indomitable but it's not listed as one of his special powers on this site. Thanks for any help.

Look at the defense symbol on the fig. If it's like this then the figure has Indomitable. If it's like this then it does not.

If the character has a power on its defense, like Toughness or Invulnerability, that'll be on the card along with the appropriate symbol.