Sankaku Sagata (姿三角 Sagata Sankaku) or The Champ, is a wondering samurai that travels around the world and defeats many martial artists.
On his way towards Penguin Village, he is challenged by Shiverman and defeats him. When he arrives in Penguin Village he meets Arale Norimaki, Gatchan, and Kinoko Sarada. He proves he is a good swordman when he constantly slash at a leaf on the ground cutting it in half, along with part of the road.
Arale takes him to her house to feed him some ramen, which is his favorite food. While eating ramen, he is stalked by Shiverman who finds out a way to defeat him.
Later in the day, Shiverman challenges him and brings out ramen to distract him, but Sagata still wins, proving he is still the best.
- While Sankaku Sagata appears in both the manga and anime, Shiverman only appears in the anime. In the manga, the Champ scares an anthropomorphic bear on the road, and then tries to impress Arale and her friends with his strength.