I saw someone using a green lantern robot sidekick, searched and saw that we now can have powerset robot sidekicks, but I don't have this option in my iconic powers... Edit: Nvm, I had to equip it in my loadout, the iconic power point is just to learn robot sidekick.
Reset your skill points. Then choose robot sidekick . When you open your loadout you will have 2 sidekicks. Choose the exobyte sidekick. Voila. Lantern sidekick.