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.

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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)

Origin

Santa Monica, California, United States

Occupation

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

Zodiac / Chinese zodiac

Sagittarius / Rat

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

September 25, 2026

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.