Ace Green Arrow is a 3-star base gold TECH character that dropped toward the end of September as a sort of "surprise".
His shards and gears are obtained through challenges and selected premium chests.
Original threat level of 3096
Whenever he tags out, Ace Green Arrow fires an arrow at the opponent, pausing their power generation. This ability, combined with the power drain on his special 1, means he can be rather effective at controlling the opponent’s power.
Green Arrow has also seen some popularity in raids, due to the fact that he can both power drain and power lock. This can prove to be extremely useful against phase 4 Brainiac, as it can prevent him from wiping your team with his supermove.