Karjamian Mythos: Backstory snippet#215 by KarjamP, literature
Literature
Karjamian Mythos: Backstory snippet#215
PK and Nega-Lime's respective Supreme forms is powerful enough to, for example, allow them to contain blackholes and even close them.
After all, the Supreme form rivals the 7 Chaos Emeralds in terms of power (perhaps even more). The huge difference between the Super form granted by the Emeralds and their Supreme form being that they can turn into their Supreme form whenever they want as long as they absorb enough energy.
It's even said to even be as powerful as the Super Seiyans, especially at full strength.
This, alongside with it being stackable with the Super form granted by the Chaos Emeralds, actually make both forms impossibly broken
Karjamian Mythos: Backstory snippet#97 by KarjamP, literature
Literature
Karjamian Mythos: Backstory snippet#97
In addition to super-forms gained via external sources, PK and Nega-Lime both have super forms unique to themselves. They are called "PK Supreme" and "Nega-Lime Supreme" when they are transformed.