Mind Lock: Voodoo can use mind control. When she does, modify her attack value by +2 and the target character is not required to be in range or line of fire if she previously hit it with mind control.

The question I have: if Voodoo uses mind control on Beast Boy, and he morphs (let's say to the dolphin) does she need line of fire to mind control the dolphin. In other words, when Beast Boy morphs, does it count as the same character for this purpose?

http://heroclix.com/heroclix/the-many/#axzz2CZoeHaLE
It counts as the same character.