The Rugrats as martial artists of different kinds in their adventure in Japan.
The top picture has Susie Carmichael as a samurai. The person next to her is Soyami Senshi, an honorable boy who follows Bushido, as a samurai. To the far right is the evil antagonist, Mudana Reikokuna, who is very good at kendo and other kenjutsu.
The middle picture has Chuckie Finster, Tafuyumi Torameiyo, and Lil DeVille as Budo fighters.
The bottom picture has Angelica Pickles as a ninja and Yuurikage, a girl who befriends Angelica and has a liking for ninjutsu, as a ninja. Tifokana Reikokuna, at the bottom right, is an evil ninja who serves her sister, Mudana.
'Rugrats' is owned by Nickelodeon. I only own my OCs. The rest of the characters are owned by Nickelodeon.