alchemical serum boosts him at night with enhanced strength, speed, agility, endurance, reflexes, senses, and recuperative powers, as well as being able to go for one month at a time without sleep, uses Hawkarangs as grappling hooks, throwing blades, smoke bombs, acid pellets, and micro-explosives, operates the Hawkrod, Hawk-Plane, motorcycle, etc.
Previous Nighthawks include the one from Earth-S, the Defender, the other one from Earth-S, the Defender's replacement, the one from Supreme Power, and the one from Supreme Power's replacement.
The Squadron Supreme of America were artificially engineered "America's Mightiest Heroes", created by Mephisto and his corrupt & resurrected Phil Coulson to serve American interests only when the Avengers went global. With the Pandemonium Cube, Coulson created a new reality for Heroes Reborn where the Avengers never existed and Nighthawk's Squadron were real people and the greatest heroes of Earth. Since reality reverted, Nighthawk and his Squadron retain the memories of their "real" lives from that reality.
Heroes Reborn Nighthawk shared many story arcs common in with Batman and Spider-Man. In his world, the Green Goblin killed his sidekick Falcon on the Chessapeake Bridge, with Gwen Stacy going on to become his new partner, Night-Gwen. He brought an alien costume back to Earth while dating the Black Cat, and fought Hyperion in his Earth's version of Civil War.