The Seventh Samurai lives with his son, Toshiro, in Shogun City, which according to White Pantera is crime free thanks to him, so much so that he has resorted to catching those committing low level crimes such as jay walking. He came to Miracle City in the episode, Rising Son, to prepare his son to face the real world. His enemy is the Ninja Monster Clan, who attempts to attack Toshiro.
The Seventh Samurai wears a horned hat with a number seven trinket on it, matching the one on his belt buckle. He wears brown samurai armor with arrows stuck into the shoulder pads, underneath this, he wears a red long-sleeved shirt and black pants.
According to Rodolfo, the Seventh Samurai's hometown of Shogun City was once littered with crime. The Seventh Samurai defeated the Ninja Clan, making Shogun City a clean and safe town.
He and White Pantera are shown to be old friends, Samurai already having heard of Manny and Frida from White Pantera. Puma Loco spent the entirety of Samurai's time with the Riveras in disguise, as he feared Samurai would recognize him from his crimes in Shogun City.