Talk:Ultraman Tiga (character)/@comment-27977344-20160502042402/@comment-5527544-20160502173240

Tiga simply stayed in Power Type, because he didn't feel the other types were best suited against Gatanozoa, overall. He also didn't want to leave himself open to attack when changing back to Multi Type.

Now note: The following is based on my observation of the shows.

As for changing, Type Change is different than Form Change. When Tiga type changes, he's simply changing the energy that flows throw him via his forehead crystal. It's short and its simple, he doesn't even need both hands to do it. With form change, like with Cosmos, Cosmos is seemingly erecting an energy field around his body which does something similar to Type Change. The difference is, it takes no real amount of energy to maintain or change during Type Change, while with Form change, when Cosmos was tired and changed into Corona Mode, his exhaustion caused him to quickly fade back to his default form.

Therefore Tiga's choice to stay in Powered Type, was most likely a strategic one, which ultimately a moot point.