For a Justice League game I ran at a local gaming convention, I made up character sketches on index cards that I passed out to the players. I often make up cards like this for NPC’s too, especially in games where there are a lot of NPC’s to keep straight.

jlacard aquaman

jlacard batman

jlacard blackcanary

jlacard elongatedman

jlacard flash

jlacard greenarrow

jlacard greenlantern

jlacard hawkgirl

jlacard martianmanhunter

jlacard superman

jlacard wonderwoman

jlacard zatanna