Consistently identified as Odate Buta in official media, the character called "De-Buta" debuted in Episode 60 of the 1977 series. This small mechanical pig appears on the Doronbo Gang's mecha console. It delivers the proverbial catchphrase "Buta mo ki ni noboru" (Even pigs can climb trees) when Boyacky receives praise from Doronjo, symbolizing unexpected achievement or motivation. The phrase became a cultural phenomenon within the franchise.

Odate Buta functions as a recurring gag and mascot. Its appearance coincides with Boyacky's moments of validation, typically featuring visual humor of the pig climbing a palm tree on the mecha's display screen. The live-action film adaptation reinterpreted the phrase with a raunchier subtext, implying it represented Boyacky's arousal.

The 2008 remake retained Odate Buta with identical functionality, design, and catchphrase, reinforcing its role as a signature element of the Doronbo Gang's scenes and preserving its original thematic purpose.

In the spin-off *Yatterman Night*, a spiritual successor named Lord Oda appears as Leopard's pet pig. Though organic and capable of speech, Lord Oda fills a similar narrative role by providing comic relief and emotional support to the new Doronbow Gang. The character explicitly references the legacy of the original franchise's pig mascot, confirming its in-universe cultural resonance.