Flamebird

The primary character to use the Flamebird name is Bette Kane, who was the pre-Crisis hero Bat-Girl.

In pre-Crisis continuity, Flamebird is an alias used by Jimmy Olsen in adventures shared with Superman in the shrunken Kryptonian city of Kandor.

In post-Crisis on Infinite Earths continuity, Kane never becomes Bat-Girl and instead assumes the Flamebird moniker.

[6][7] In Supergirl #6, Kara Zor-El assumes the Flamebird identity to fight crime in Kandor, alongside Power Girl as Nightwing.

[episode needed] In Superman: New Krypton, Thara Ak-Var and Chris Kent become Flamebird and Nightwing, serving as the avatars of their namesake entities.

Jimmy Olsen as Flamebird, art by Curt Swan .
Bette Kane as Flamebird and Dick Grayson as Nightwing, from JLA / Titans #2; art by Phil Jimenez .
Kara Zor-El as Flamebird, art by Ed Benes .