Suggestions by @khabib

Sean Gunn

as Weasel in Casting James Gunn's DCU! :D

Jai Courtney

as Captain Boomerang in Casting James Gunn's DCU! :D

David Dastmalchian

as Polka-Dot Man in Casting James Gunn's DCU! :D

Joel Kinnaman

as Rick Flag in Casting James Gunn's DCU! :D

Sylvester Stallone

as King Shark in Casting James Gunn's DCU! :D

Daniela Melchior

as Ratcatcher 2 in Casting James Gunn's DCU! :D

Idris Elba

as Bloodsport in Casting James Gunn's DCU! :D

John Cena

as Peacemaker in Casting James Gunn's DCU! :D

Jason Sudeikis

as Blue Beetle in Casting James Gunn's DCU! :D

Deborah Ann Woll

as Trixie Collins in Casting James Gunn's DCU! :D

Josh Brolin

as Swamp Thing in Casting James Gunn's DCU! :D

Bill Skarsgård

as Swamp Thing in Casting James Gunn's DCU! :D

Jason Isaacs

as Brainiac in Casting James Gunn's DCU! :D

Jude Law

as Brainiac in Casting James Gunn's DCU! :D

Giancarlo Esposito

as Lucius Fox in Casting James Gunn's DCU! :D

Clive Owen

as Thomas Wayne in Casting James Gunn's DCU! :D

Ella Jay Basco

as Cassandra Cain in Casting James Gunn's DCU! :D

Mary Elizabeth Winstead

as Huntress in Casting James Gunn's DCU! :D

Chris Messina

as Victor Zszaz in Casting James Gunn's DCU! :D

Colin Salmon

as Red Tornado in Casting James Gunn's DCU! :D