Crisis on Infinite Earths Cast

It is a big cast, here is a quick guide who appears where. The ten actors to appear in all five parts are Melissa Benoist, Grant Gustin, Ruby Rose, Brendon Routh, Stephen Amell, Caity Lotz, Lamonica Garrett, Tyler Hoechlin and Elizabeth Tulloch. SPOILERS AHEAD

Regular = Regular on the show
Guest = Guest star from another show
Cameo = Short appearance in one scene, even if show regular

Characters	Supergirl (Part 1)	Batwoman (Part 2)	The Flash (Part 3)	Arrow (Part 4)	Legends of Tomorrow (Part 5)
Supergirl/Kara	Regular	Guest	Guest	Guest	Guest
Martian Manhunter/ J'onn	Regular		Guest	Guest	Guest
Batwoman/ Kate	Guest	Regular	Guest	Guest	Guest
The Flash/ Barry	Guest	Guest	Regular	Guest	Guest
Arrow/ Oliver and Parrellel Earth Oliver	Guest	Guest	Guest	Regular	Guest
White Canary/ Sara	Guest	Guest	Guest	Guest	Regular
Superman/ Clark (Earth-96)		Guest	Guest		Cameo
Ryan Choi/ The Atom (Next year)			Guest	Guest	Guest
Lex Luthor		Guest	Guest	Guest	Guest
Alex Danvars	Regular				Guest
Dreamer/ Nia	Regular				Guest
Brainaic 5	Regular
Lena Luthor	Regular
Superman/ Clark	Guest	Guest	Guest	Cameo	Guest
Lois Lane	Guest	Guest	Guest	Cameo	Cameo
Mia Queen/ Arrow	Guest	Guest	Guest
Luke Fox		Regular
Harbinger/ Lyla	Guest	Guest	Guest		Cameo
The Atom/ Ray	Guest	Guest	Guest	Guest	Regular
Mick Rory (Multiple Earths)		Guest	Guest		Regular
John Constatine		Guest	Guest
Monitor	Guest	Guest	Guest	Guest
Clark Kent  Earth-167		Guest
Lois Lane Earth-167	Cameo (as Kara's mom)	Cameo
Bruce Wayne Earth-99		Guest
John Diggle		Guest	Guest	Cameo/ Regular	Guest
Lucifer Moringstar		Cameo
Iris West		Guest	Regular
Nash wells/ Pariah	Guest		Regular		Guest
Cisco Ramon			Regular
Caitlin Snow/ Frost			Regular		Guest
Enlongated Man/Ralph			Regular
The Flash/ Barry  (Earth-90)			Guest
Black  Lightning/ Jefferson			Guest		Guest
Anti-Monitor				Guest	Guest
The Flash/ Barry  (DCEU)				Cameo
Black Canary					Guest
Wild Dog/Rene					Guest
Eba Sharpe					Cameo/ Regular
Steel/ Nate					Cameo/ Regular