Sammer's Kingdom is the setting of Chapter 6 in Super Paper Mario, and is the namesake of Chapter 6-1. It is discovered after place the sixth Pure Heart in the Heart Pillar and going through the blue door. It was destroyed by The Void in the main story, leaving nothing but an empty white space, but was restored after the story's end.
This land is ruled by King Sammer. It is most notable for being the location of the Duel of 100 tournament, in which challengers face off against 100 Sammer Guys. Only the first 25 Sammer Guys are faced in Chapter 6-1, while the rest are encountered in the three other chapters. However, in the main story, only the first 20 Sammer Guys are battled, and only 30 Sammer Guys are encountered.
In addition to the Duel of 100, Tippi and Tiptron's tattles mention various other events held in the Sammer's Kingdom, such as the Sammer Guy Break Hour, the annual Sammer Guy BBQ, the Sammy Awards, and the annual Sammer Quiz; however, Mario and friends are unable to attend any of these in person.
The kingdom appears to be based on Japan, with "Sammer Guy" being a pun on "samurai".
Duel of 100
According to Garson of the Flipside bar, The Underwhere, 1,500 years prior to the events of Super Paper Mario, the younger sister of Merlumina was entrusted with a Pure Heart, to give to the Sammer Kingdom's ruler to protect. Upon meeting however, Merlumina's sister and the Sammer King fell in love and she stayed behind. The two eventually married and had 100 children. Ever since, the number 100 has been sacred to the Sammer Kingdom.
Chapter 6-1: Sammer Guy Showdown
Mario and co. pass through the Blue Door and notice that the Void is much larger in Sammer's Kingdom than anywhere else. They enter a door and find Heronicus running from Jade Blooper, the first Sammer Guy. They battle the Sammer Guy themselves and defeat him, catching the eye of King Sammer. He tells them of a prophecy in his kingdom foretelling that the king's Pure Heart will be given to the one able to defeat all 100 Sammer Guys. The heroes move on to battle the rest of them, but after Round 20, the void begins to grow and an earthquake causes every Sammer Guy to falter. Count Bleck appears to proclaim this world's doom and after an argument between him and Tippi, he leaves and the heroes hurry on to find King Sammer.
The Duel of 100
After finishing the game, the gang may start the Duel of 100 over. As before, Chapter 6-1 has Rounds 1-25. After defeating Sunshine Flood, Mario and co. will be able to continue on to 6-2.
If the player returns to Sammer's Kingdom after finishing the Duel of 100, King Sammer will be found on Gate 1. He will say the Age of the Sammer Guys ended and that he sent the Sammer Guys on a tropical vacation. He also jokes that he will replace them with kitty robots. When Tiptron uses Tattle on him, she reveals he is planning to turn the Duel of 100 Battle Gates into a water amusement park.
Names in other languages