Cheech Marin as Jesús Monteya

Eric Roberts as Fred Wook

Julie Hagerty as Petra Black

Robert Carradine as Sammy Margolin

Louise Lasser as Ronnie Summers

Buck Henry as Lloyd Stool

Andrea Martin as April Stool

Cindy Williams as June Margolin

Cliff DeYoung as Agent Brubaker

Dion Anderson as Dr. Binibon

Peter Boyden as Dr. Childs

Nicholas Wyman as Dr. Albert

Michael Luciano as Merlin

Amy Glass as Twin # 1

Becky Glass as Twin # 2

Ed Fry as Agent Drome

Aaron Russo as Voice of fish

Patrick John Hurley as Agent in jungle

Daniel Chapman as Agent in jungle

Greg Rex as Hippy Singer

Timothy Leary as Diner at Ronnie's

Jerry Rubin as Diner at Ronnie's

Bobby Seale as Diner at Ronnie's

Rosanna Iversen as La Fleck model

Michael Louden as La Fleck model

Charlie Gates as La Fleck model

Darrick Harris as La Fleck model

Janet Harper as La Fleck model

Peter Nevargic as Julian

Elżbieta Czyżewska as Eema

William Paulson as Phil

Larry Attre as Agent Blandish

Tom Sizemore as Ian

Frederikke Borge as Mona

Deena Levy as Wanda

Kevin Dorman as Jay

Davidson Thomson as Amos

Timothy L. Haffern as Lance

Rodney Clark as Cowboy

Bradford Tatum as Student at school

B.J. Jefferson as Newscaster

Basia McCoy as Woman on street

Dave King as Yuppie

Edward James Hyland as Man at newsstand

David Eigenberg as Lawrence

Mitchell Riggs as Seth

Hugh Hayes as Student on street

Michelle Hurd as Student on street

Dulcy Rogers as Student on street

Bill Carraro as Agent on street

David Peel as Happy Singer

Rob Kramer as Aaron Russo (uncredited)

Melora Walters as Punky (uncredited)