"Thunder Berries" is an episode of Special Agent Oso.
As Oso makes his motorcycle invisible with invisibility paint for his training exercise, he accidentally gets some on R.R. Rapide when he receives a special alert. A girl named Grace wants to pick strawberries on a farm for her family lunch, but she is having trouble trying to pick some berries. So Oso has to help Grace pick the strawberries before the lunch is served.
- The episode's title is a reference to the James Bond film Thunderball.