Goku Black's Power Ups and Transformations

[Lord Frieza]

So dose anyone have any theories about Black's powers in comparison to Goku? For example his ki aura growing progressively darker and more "god ki" like as he powers up to match Goku. Is it him just growing more powerful or is it a subtle type of transformation or power boost?

[Steven Bloodriver]

Goku Black seems to be an imperfect clone of Goku. But as he engages in combat against powerful foes, his powers and abilities gradually become more like his good counterpart. Or more likely, to be stable enough for him to be his own separate entity.

[Cipher]

I think it's a bit early to speculate -- the next few episodes should provide much more information about his power and abilities.

All we really know at this point is:

1) His full power without using any form of Super Saiyan at the time he arrives in the main timeline is some unstated amount more powerful than Super Saiyan 3 Goku (probably, based on Trunks' estimation in the anime, more explicitly in the manga).

2) He appears to gain power, techniques, or both by being hit by stronger opponents (probably, unless it's just Goku).

3) His ki feels a lot like Zamasu's, but not entirely.