The Annihilators team include: Gladiator (His confidence cannot waver), Silver Surfer, Beta ray Bill, Quasar, and Ronan
The DBZ villains roster include: Frieza, Super Perfect Cell, Super Buu, Janemba, and LSSJ Broly
. Everyone's in character. This means Surfer will act the way he did in the fight against Thor in the current The Mighty Thor series and this also means they simply just don't speedblitz at the start of the battle.
. The Annihilator's possess their standard gears such as hammer, board, bands, ect.
. No preparation.
. Morals on if they have morals.
. No knowledge at the start. The DBZ villains assume that the Annihilators possess the same powers as a typical being in the DBZ universe.
. Fight takes place on planet Namek that's striving with Namekian life.
Why they're fighting
The DBZ villains wants to take over the universe. With the Z fighters dead due to a virus, the Annihilators stepped in to defend the DBZ universe.