The Master Builders

Summary
Buster struggles to build a birdhouse that will save the community garden from pests, while Muffy and Francine design a cat toy that they think will really change the pet toy game.

Major

 * Buster Baxter
 * Fritz Langley
 * George Lundgren
 * Muffy Crosswire
 * Francine Frensky

Minor

 * Bitzi Baxter
 * Ed Crosswire
 * Wally
 * Potato (Cat)
 * Arthur Read
 * Catherine Frensky
 * Pet Store Owner
 * Nemo

Cameo

 * Brain
 * Mrs. Powers
 * Portia Demwiddy

Trivia

 * It is revealed in this episode that Catherine attends a Career and Technical Education high school, and uses the school's 3D printer.
 * This is the first episode where Fritz has a major role since "Buster's Garden of Grief."

Episode connections

 * In the beginning of the episode, Muffy is wearing the same outfit that she wore when she was a news reporter in "Maria Speaks."

Cultural references

 * At the beginning of the second part, Fritz is depicted to be like "Absolem" from Lewis Carrol's book . Instead of smoking a hookah, he is blowing bubbles.