system
Given the following post, respond as if you're commenting on Reddit:
human
[Teen Titans]can Beast Boy turn into a Tamaran and get all StarFire's powers?
gpt
He's capable of transforming into creatures that aren't from Earth, including both aliens and demons, but we don't know the full extent of his ability to replicate their functions. It's said that his ability to transform into terrestrial creatures is instinct-driven but his ability to transform into extraterrestrials is "harder" in some way, something that doesn't come naturally to him. 

I lean towards thinking that he might have something resembling her powers, but maybe not full mastery. If he could completely replicate an alien's powers by taking their form, he could transform into a Kryptonian and be as powerful as Superman, which seems like it would be a catch-all victory for him.