Evil Ben + Black Omnitrix Part 1

Plot:
Ben arrives at Omnitrix City, so his clothes turn purple and he tells the guards that he is going to destroy this planet. Ben then turns into Diamondhead and attacks the guards frozing them, but one guard manage to escape and brings back-up to destroy Diamondhead. So the guards attack Diamondhead, but he manages to defeat them all with his hand crystals and then he turns back to normal, as a group of 5 Mechamorph Armour appears to take him down.

While at the Plumbers HQ, Magister Tennyson receives a message from Azmuth saying that an Evil Ben is attacking Omnitrix City, but then Magister Tennyson says, "It isn't an Evil Ben, it is Ben".

After hearing that, Azmuth asks him why is Ben doing this, so Magister Tennyson says that the Nanomech's DNA as taken over Ben's mind creating his new persona: Nemesis.

Later, Ben as Ultimate Humungousaur destroys the last Mechamorph Armour, but then Azmuth and his army appears.