|Panic in the Sewers|
|Written by||Jeremy Shipp|
|Directed by||Alan Wan|
|Previous episode||The Gauntlet|
|Next episode||Mousers Attack!|
Panic in the Sewers is the tenth episode of the first season.
Fearing for the Turtles, Splinter keeps the Turtles from going to the surface, forcing them to train until they are ready to fight the Shredder. But they can't keep away from the surface, when Dogpound plans to flood their sewers with a dangerous chemical.
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- Captain Ryan (TV screen)
- Commander Grundch (TV screen)
- Panicons (only appearance; no lines; TV screen)
- Spike (no lines)
- Antonio (picture; cameo)
- Bart (first appearance)
- New York City
- Michelangelo's nunchaku
- Donatello's bo staff
- Leonardo's katanas
- Raphael's sais
- Kuro Kabuto
- Food replicator (mentioned only)
- Thermo charge (only appearance; TV screen)
- April's cell phone
- April's school ID badge (only appearance)
- Ninja smoke bombs
- Donatello's laptop
- Space-Heroes pinball machine
- Captain Ryan's ship (mentioned only)
- Patrol buggy (first appearance)
|Mae Whitman||April O'Neil|
|Kevin Michael Richardson||Shredder|
|Andrew Kishino|| Fong|
|Brian Bloom||Captain Ryan|
Connections to previous episodes
- The Turtles fought Shredder for the first time in previous episode.
- Chris Bradford was mutated into Dogpound in the previous episode; Mikey first nicknames him in this episode.
- Leonardo's caller ID on April's phone is "ichiban turtle," which means "number one turtle." His photo is also of Captain Ryan.