Amphibia is a pretty enjoyable mix of standalone and story/character developing episodes. While everything listed below is skippable, I'd highly recommend watching some of them, especially the ones that are bolded, as they'll deepen your connection to the world and characters.
Given that this is an ongoing series, this guide is subject to change in the future.
Total Episodes Skipped: 27
Season 1
Creator Matt Braly purposely made this season most non-serialized as he believed it was important to develop the characters before diving into the story.
- Cane Crazy
- Flood, Sweat, and Tears
- Hop Luck
- Stakeout
- The Domino Effect
- Anne Theft Auto
- Sprig vs. Hop Pop
- Girl Time
- Contagi-Anne
- Family Shrub
- Lily Pad Thai
- Plantar's Last Stand
- Grubhog Day
- Hop Pop and Lock
- Civil Wart
- Hop-Popular
- Croak and Punishment
- Trip to the Archives
- Snow Day
- Cracking Mrs. Croaker
- A Night at the Inn
- Family Fishing Trip
- Cursed!
- Fiddle Me This
- The Big Bugball Game
- Combat Camp
- Children of Spore