"Thunderbubble" is an episode of Special Agent Oso.
Oso is trained to transport Wolfie's boat into the lake. Oso tries filling the passageway with water when a special alert is called, and the water overflows. A boy named Andrew wants to blow bubbles for his grandparents' 50th wedding anniversary dance, but he has trouble doing so. So Oso decides to teach Andrew how to blow bubbles before the band begins playing for the anniversary dance.
- The episode's title is a reference to the James Bond film Thunderball.