Jeff "Swampy" Marsh

Jeff "Swampy" Marsh deserves far more household recognition than he gets. As the co-creator of Phineas and Ferb alongside Dan Povenmire, he helped build one of the smartest, most genuinely joyful animated series of its era, a show that respected its young audience's intelligence while sneaking in jokes for adults. What I love is his range: writer, voice actor, director, and composer all at once, the mark of someone who simply loves making things. Born in Santa Monica into a blended family, he channeled that chaos into endlessly inventive storytelling. To me, he embodies the rare creator who never lost his sense of childhood wonder.

Name (English)

Jeff "Swampy" Marsh

Name (Japanese)

ジェフ・“スワンピー”・マーシュ

Reading

じぇふ・“すわんぴー”・まーしゅ

Born

December 9, 1960 (age 65)

Zodiac / Chinese zodiac

Sagittarius / Rat

Origin

Santa Monica, California, United States

Occupation

screenwriter / actor / voice actor / film score composer / television director

High school

Reseda High School

• Wikipedia (English)https://en.wikipedia.org/wiki/Jeff%20%22Swampy%22%20Marsh
• Wikidatahttps://www.wikidata.org/wiki/Q290744

Tags

• California
• screenwriter
• actor
• voice actor

Last updated

2026-06-21

Facts are limited to publicly available information up to 2024; non-public or unconfirmed items are omitted. English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.