skallagrim has little to do with the Rebellion, aside from a run in in the past.

The Rebellion oppose Rilla, the Sacred, Ouro, and Joseph, because they are dicks - of the highest calibur. Including several attempts to mass murder everyone and each other. The Rebellion see them, or rather did - Only Joseph and Ouro made the jump to the new multiverse - as threats to society, Gods and Kings that needed to be put down for the betterment of man, and essentially survival. So, in essence, they are good guys. Insofar as intention.

Personality? They are decent there as well, honestly.