*** BAKER'S DOZEN - Movies about Superheroes Neither Marvel nor DC ***

1. The Toxic Avenger (1984)
2. Unbreakable (2000)
3. SUPER (2010)
4. Condorman (1981)
5. DEFENDOR (2009)
6. Kick-Ass (2010)
7. Griff The Invisible (2010)
8. The Incredibles (2004)
9. SPECIAL (2006)
10. Spawn (1997)

1. The Toxic Avenger (1984)
2. Unbreakable (2000)
3. SUPER (2010)
4. Condorman (1981)
5. DEFENDOR (2009)
6. Kick-Ass (2010)
7. Griff The Invisible (2010)
8. The Incredibles (2004)
9. SPECIAL (2006)
10. Spawn (1997)
11. Rocketeer (1994)

1. The Toxic Avenger (1984)
2. Unbreakable (2000)
3. SUPER (2010)
4. Condorman (1981)
5. DEFENDOR (2009)
6. Kick-Ass (2010)
7. Griff The Invisible (2010)
8. The Incredibles (2004)
9. SPECIAL (2006)
10. Spawn (1997)
11. Rocketeer (1994)
12. Hancock (2008)

1. The Toxic Avenger (1984)
2. Unbreakable (2000)
3. SUPER (2010)
4. Condorman (1981)
5. DEFENDOR (2009)
6. Kick-Ass (2010)
7. Griff The Invisible (2010)
8. The Incredibles (2004)
9. SPECIAL (2006)
10. Spawn (1997)
11. Rocketeer (1994)
12. Hancock (2008)
13. The Crow (1994)

I can't help wonder if these would count:
The Shadow (1994)
The Phantom (1996)
Flash Gordon (1980)
Green Hornet (1966) - TV Series

Reason I'm asking is that they were all created independently but then either DC or Marvel got the rights and adapted them to comic books.