(they are training you)

J'onn: Shapeshifting, Phasing through things and flying, Mind reading, Tactile Telekinesis, Super Strength, Super Senses, Martian Vision and Mind Control.

Superman: Superhuman strength, Invulnerability, Super speed, Super hearing, Super vision which includes, heat vision, x-ray vision, microscopic vision and telescopic vision, Super breath, Flight, Super stamina, Super durability and Regeneration

Green Lantern: Creating constructs with my ring.