Episode 15, Season 2
Battle of the Behemoths: Black Behemoth V.S. Groudon
In the middle of Compent's fight with Dubbel D, Dubbel D summons the ancient continent Pokemon, Groudon. The beast laughs at Compent's attacks, and almost kills Compent with an earthquake. However, DP and his two Floatzels come in, and only do little damage on the Groudon before they are knocked out. Then, storming into the house comes Black Behemoth, ready to destroy the Groudon for breaking the "Binds of a Behemoth", a set of written laws that all Behemoths must obey.
After many, many earthquakes, flamethrowers, dark pulses and hyper beams later, Black Behemoth emerges victorious, and publicly executes Groudon for his crimes. However, it turns out that Dubbel D has escaped, and was planning on Black Behemoth to come in and battle her Groudon so she could get away safely. In frustration, Black Behemoth bashes his head on a big tree for his stupidity, while Muji comes in with some more terrible news...