What anime character knows the most martial arts?

There are several anime characters known for their extensive knowledge and mastery of multiple martial arts. While it is difficult to determine an absolute "most" knowledgeable character, here are some notable contenders:

1. Son Goku (Dragon Ball series): Goku is a Saiyan warrior who has mastered numerous martial arts and techniques, including the powerful form known as Ultra Instinct.

2. Kenshiro (Fist of the North Star): Kenshiro is the main protagonist who possesses the ancient martial art called Hokuto Shinken, allowing him to defeat opponents by attacking pressure points.

3. Sakata Gintoki (Gintama): Gintoki is a skilled swordsman who incorporates several styles of martial arts into his sword fighting, making him a formidable combatant.

4. Himura Kenshin (Rurouni Kenshin): Kenshin is a former assassin who has extensive knowledge of various swordsmanship styles, including Hiten Mitsurugi-ryu.

5. Saitama (One Punch Man): Saitama may not possess any formal martial arts training, but his overwhelming strength and unbeatable punches make him virtually invincible against any opponent.

While these characters are renowned for their martial arts skills, there are numerous others in different anime series with impressive abilities.