Polar Boy was a member of the Legion of Substitute Heroes.
- Tharrian Physiology
- Cryokinesis: Polar Boy can reduce the heat around himself or other objects, creating a drop in temperature ranging from mild to intense. Because of this, Brek can withstand hotter than normal temperatures.
- Energy Projection: Polar Boy also possesses the ability to project waves of intense cold from his hands. These cold blasts can freeze opponents in their tracks or act on the elements, such as transforming water vapor into ice crystals.
- Vulnerability to Fire: Intense heat will negate the effects of Polar Boy's powers.
- He often wears warm clothes due to the cooler temperatures on Earth.
- 2 Appearances of Brek Bannin (Post-Zero Hour)
- 2 Images featuring Brek Bannin (Post-Zero Hour)
- Quotations by or about Brek Bannin (Post-Zero Hour)
- Character Gallery: Brek Bannin (Post-Zero Hour)
Legion of Super-Heroes member