The main band consisted of Flansburgh, the vocalist, guitarist, keyboardist, and songwriter; bassist Hal Cragin; and drummer Steve Calhoon of Skeleton Key, Enon and Pretendo. Various guest musicians supplemented the trio, notably Mark Feldman, Yuval Gabay (of Soul Coughing), Ghost Krabb, Sugar Puff, Elina Lowensohn, his wife Robin Goldwasser (referred to as Sister Puff), Kate Flannery (as "Lady Puff"), Ammonia D, Trini Lopez, Jay Sherman-Godfrey, Jim O'Connor, Phil Hernandez, Frank London, Eric Schermerhorn, and Mike Viola.
As of 2004, Mono Puff appears to be finished or on hiatus, due to Cragin's moving away from the New York area.
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