Blackfire is the meaner and older sister of Starfire. Like Superman and Supergirl, she was born in a different planet than earth, named "Tamaran". Blackfire is an incredibly strong DC character and her purple light colored powers also incomparably stronger than Starfire's green colored powers. However, Blackfire can only lift up to 66 tons. On the other hand, Superman lift at least 2,000,000,000 tons! This means that Superman's powers are far much stronger than Blackfire's. However, Starfire is strong enough to beat Superman so Blackfire might have a chance to win as well.