Robofusion!

Robofusion is the seventeenth episode of Tenkai Knights. It first aired on January 4, 2014 on Cartoon Network in the United States.

Plot
On Earth, Mr. White takes the boys fishing. Everybody catches a fish, except Chooki. He takes this pretty bad, and wants to keep trying until he catches one. Meanwhile, on Quarton, Vilius and his men can finally withdraw the Tenkai Dragon's energy. Granox, Slyger, a Sho, and a Corrupted soldier can robofuse as well. Also, Boreas and the other guardians mention that the balance of tenkai energy is unbalanced.

Trivia
Chooki is good at every sport, except fishing.