I accidentally got some of my tracings out of alphabetical order. Oh well, no one's reading it anyway.
Primary ADAM ARKIN (not shown) has one relevant credit, an episode of the 80s teleseries HARD TIME ON PLANET EARTH.
Primary ALAN ARKIN acted in THE ROCKETEER and played the title hero in the spoofy RETURN OF CAPTAIN INVINCIBLE.
Peripheral RICHARD ARLEN acted in THE CRAWLING HAND with--
Primary TRISTRAM COFFIN, best known for many serials, of which I'll first invoke KING OF THE ROCKET MEN, his only "superhero."
Primary GEORGE ARLISS may have been the oldest actor to play a "quasi-superhero:" he was in his late 50s when he did his final role, DOCTOR SYN.
Primary PEDRO ARMENDARIZ SR. (left) acted in CAPTAIN SINBAD and FROM RUSSIA WITH LOVE.
Primary PEDRO ARMENDARIZ JR. acted in LICENSE TO KILL and both Banderas ZORRO movies.
Primary HENRY ARMETTA (left) acted in 1934's THE BLACK CAT.
Peripheral ARMIDA (far left) acted in JUNGLE GODDESS with--
Primary GEORGE REEVES, the first TV SUPERMAN.