Chô heiki shutsugeki! Chikyû saigo no tatakai!
- Episode aired 2006
- TV-PG
- 46m
Penny and Billy work together to find the hidden location of Element X and launch a last-ditch effort to destroy the alien planet's navigation system.Penny and Billy work together to find the hidden location of Element X and launch a last-ditch effort to destroy the alien planet's navigation system.Penny and Billy work together to find the hidden location of Element X and launch a last-ditch effort to destroy the alien planet's navigation system.