Chris Hemsworth character Henry / Agent H
Tessa Thompson character Molly Wright / Agent M
Rebecca Ferguson character Riza Stavros
Kumail Nanjiani character Pawny (voice)
Rafe Spall character Agent C
Laurent Bourgeois character Alien Twin #1
Larry Bourgeois character Alien Twin #2
Emma Thompson character Agent O
Liam Neeson character Agent High T
Mandeiya Flory character Young Molly
Kayvan Novak character Vungus / Nasr / Bassam
Annie Burkin character Nerlene
Tim Blaney character Frank the Pug (voice)
Spencer Wilding character Luca Brasi
Marcy Harriell character Molly's Mom
Inny Clemons character Molly's Dad
Thom Fountain character Worm Guy #1 (voice)
Drew Massey character Worm Guy #2 (voice)
Aaron Serotsky character Man in Black #1
Matthew Bates character FBI HR Guy
Sartaj Garewal character CIA Recruiter
Stephen Wight character Guy
Brian Silliman character Cabbie
John Sousa character Jimmy the Alien
Jeff Kim character Lead MIB Agent
Michael Adams character MIB Lead Interrogator
Mike Capozzola character Veteran MIB Agent
Andrew Greenough character Freddie the Alien
Natasha Culzac character Nightclub Waitress
David Hartley character MIB Forensics Agent
Paul Brennen character Alien Boss
Ania Sowinski character Alien Woman / Boss' Wife
Stefan Kalipha character Antique Shopkeeper
Daniel Scott-Smith character Nightclub Bartender
Vincent Pirillo character MIB Security Guard
Kaya Brown-Hallam character NIghtclub Patron #1
Beau Fowler character Nightclub Patron #2
Lukas DiSparrow character Nightclub Patron #3
Andy Beckwith character Viper Room Player
Romanos Blanco character Man at Eiffel Tower
Aistė Diržiūtė character Woman at Eiffel Tower
Anatole Taubman character French Salesman
Sorel Johnson character Nervous Forensic Tech
Paul Smith character Proprietor (Charlie)
Wong Charlie character Immigration Alien (uncredited)
Elon Musk character Alien on TV Monitor (uncredited)
Bern Collaço character MIB Scientist
Elle Black character Alien Dancer (uncredited)
Hiten Patel character Tech Geek (uncredited)
