Quick and Easy Questions (please read the OP)

[The Future Warrior]

Question... I have heard Secondaries are capable of doing extraordinary things, but I wanted to ask specifically if they can LEARN to be superhuman? Specifically, can Aang teach an NPC bending? Possible Spirit-bending shenanigans is possible.

Short answer: yes

Long answer: Secondaries can get stronger on their own, up to and including as strong (or even stronger) than the prime who summoned them. They just have to do it the old-fashioned way, through training, effort and time. They can't take shortcuts to just "oh I can do that now" with Omnilium, like a Prime can.