Dan and Runo discover that Alice is missing and go looking for her. With Alice no where to be found Dan makes his way to the park to battle Shun. Tigrerra intercepts Drago at the park and convinces him to battle her instead of Skyress. Dan agrees and Runo and Tigrerra engage them in a furious battle! Bakugan Battle Brawlers (爆 (ばく) 丸 (がん) バトルブローラーズ, Bakugan Batoru Burōrāzu) is a Japanese-Canadian anime adventure television series produced by TMS Entertainment, Dentsu Inc., and Nelvana Animation under the direction of Mitsuo Hashimoto.
Runo and Tigrerra are put to the test in the Doom Dimension. They find themselves battling a younger version of Dan! Runo rises to the challenge but doesn't listen to Tigrerra and rushes into action, quickly losing two rounds. Runo, Dan, and Julie are the second youngest out of the six original Battle Brawlers. Out of all the Battle Brawlers' Haos brawlers, Runo is the only human. Runo and Alice are the only original brawlers who never got involved in the Neathia-Gundalia storyline in Gundalian Invaders or the first arc of Mechtanium Surge.