The Final Battle in the History of Final Battles/Luna gets swallowed whole

Here is how the final battle begins in The Overlord Returns.

At last, Po, SpongeBob, Twilight, Manny, Laval, Lloyd, Emmet, Batman, Wyldstyle, Gandalf and their friends begin their final battle against the Overlord, Lord Vortech and their followers.

Po:

The Overlord: