The Battle in the Null Void was an open conflict between Ben Tennyson, Danny Fenton and a Way Bad.
Background
In the background of the battle you can see the some of the structures of the null void.
Battle
When Danny got in the tower at the null void Ben transformed into Swampfire and started blasting Danny with heat. Then Danny blasted Swampfire's head with an ecto-laser. Right after that, Danny went full ghost. Danny blasted Swampfire out of the tower. Danny flew out after Ben. Ben kept blasting Danny with fire blasts. Danny froze Swampfire's arms. Ben broke out of the ice, and blasted Danny. Danny blocked it with his ecto-sheild. Then shot another ecto-laser. Ben tried to capture Danny in vines but failed. Rook shot an electric net at danny and electrocuted Danny. Then, Ben transformed into Ghostfreak and chased after Danny after he phased through the net. Ben trapped Danny in his tentacles. But, Danny did his ghostly whale and freed himself. Ben then transformed into echo echo, and used his "Echo Storm". Then up behind him came a way bad. After that, Danny and Ben talked and realized they were on the same side. They, then defeated the Way Bad together.