Toonami debuted on March 17, 1997 to the United States Cartoon Network originally it aired weekdays from 4-6pm than in summer 1999 when the TOM era began it extended to 4-7 than in summer 2001 it was shortened to 5-7pm than in summer 2002 went back to it's old 4-7pm format and from there it's had here and there points when it was 4-7 and 5-7 than on April 17, 2004 it moved to Saturday nights from 7-11pm which it still remains that way as of present day. Toonami is a block that airs japanese anime as well as american cartoons with a lot of fighting.

Shows that aired on toonami

Batman, The Animated Series
Batman Beyond
The Batman
Justice League
Justice League Unlimited
Sailor Moon
Voltron - Defender of the Universe
He-Man and the Masters of the Universe
G.I. Joe
Transformers Armada
Transformers Energon
Transformers Cybertron
Pokemon Chronicles
Pokemon Battle Frontier
Wulin Warriors
Big O
The Real Adventures of Jonny Quest
Beast Wars
Zatch Bell
Tenchi Muyo!
Tenchi Universe
Tenchi in Tokyo
Card Captors
One Piece
Ronin Warriors
Cartoon Roulette
Outlaw Star
Fantastic Four - World's Greatest Heroes
Dragonball Z
Dragonball GT
Megas XLR
Teen Titans
Rurouni Keinshin
Powerpuff Girls
Zoids fusors
Cyborg 009
Astro Boy
Duel Masters
G-Force: Guardians of Space
Gundam: 08th MS Team
Gundam 0080
Gundam Wing
G Gundam
SD Gundam
Gundam SEED
Jackie Chan Adventures
Rave Master
Yuyu Hakusho
Zatch Bell
Star Wars: Clone Wars
Hot Wheels: World Race


Bionicle: Legends of Metru Nui
Bionicle: Mask of Light
The Iron Giant
Castle in the Sky
Batman (1989)
Batman: Mask of the Phantasm
Batman & Mr. Freeze: Sub-Zero
Batman: Mystery of the Batwoman
Batman/Superman Movie - World's Finest
The Batman vs Dracula
Batman Beyond: Return of the Joker
Superman: Braniac attacks
Justice League secret origions
Justice League: The Savage Time
Justice League: Starcrossed
Naruto recap special
sailor moon movies
Spirited Away
Hellboy: Sword of Storms
DBZ movies
Jonny Quest vs. The Cyber Insects
Blue Submarine No. 6

tons more!