Neko-gami-sama is a cat-like creature that often stays inside a vending machine to warm the drinks to "body temperature"; he often uses mysterious powers to play tricks on Mesousa, such as dropping him into a hole appearing out of nowhere. As his catchphrase, he almost always ends his sentences with the phrase "-desu nya" and additionally, "nya" is Japanese onomatopoeia for the sound a cat makes; the English equivalent of "meow" (hence, he actually says "Meow" in the English translation). In each episode he is shown with his fur a different color and in the final episode there is a scene where he is constantly changing colors. When he is unable to watch the vending machines, he often will ask others to step in for him until his return; Mesousa did this in one episode in the anime. Neko-gami-sama has an elder brother that looks nearly identical to him, but wears yellow glasses and appears in the 25th episode, when he was truly a god in Ichijou's box. Neko-gami-sama bears a resemblance to Chiyo's "Father" in Azumanga Daioh, and might even be a parody of him. (Source: Wikipedia; fixed a bit by Ghotath)
Karin Maaka's father, Henry Marker is a vampire who is portrayed as surprisingly human; he seems to act in a way one might call 'silly.' Despite Karin's teenage status at age sixteen, Henry still views Karin as extremely young. Despite Karin's anomalies and flaws, he still loves her dearly: this is exemplified when Karin first suffered a nosebleed at a human school, Henry braved the sunlight to rescue Karin from the hospital workers, who would have realized she was a vampire upon examination, and is severely burned in the process. Henry suffers normal paternal jealousy when the possibility of love between Karin and Kenta Usui arises. Henry is often pushed about by his wife Carrera Marker, but has a fierce side which he rarely allows the world to see. Like most other vampires, Henry has a bat as a familiar, who remains unnamed, but has glowing red eyes. (Taken from Wikipedia.org)
A veteran samurai who fought valiantly for the Aizu clan during the Meiji restoration, acting as one of the commanders for their saboteur runs and assassinations. Also the master and creator of the Psychi Kamina sword style. However during the war Shigure lost his best friend and comrade Gentatsu (unknowingly to the hands of the Hitokiri Battousai during an attempted raid on the Choshu clan leaders who were planning an alliance with a rival clan at Suzuya.) Shigure has burdened himself with Gentatsu's death and tries to make amends by housing and taking care of Gentatsu's younger sister Toki. However in secret with one of the other Aizu clan generals (a man named Kajiki) have gather survivors of the Aizo army and plan a new restoration to eliminate the Meiji government and to make Japan how he and Gentasu envisioned it should be. He befriends Kenshin Himura after hastily dealing with some foreign sailors who were harassing Toki. Kenshin is warned by Hajime Saito about Shigure's dealings and activities. Kenshin brushes the warning off until he encounters Shigure in the midst of an assault on the British embassy. They fight then Shigure recognizes the swordplay kenshin uses and realizes Kenshin murdered Gentatsu, which enrages him to become more intense. The battle is cut short as Shigure retreats due to his army being overwhelmed. Kenshin follows to a nearby fort where the Aizu remnant have barricaded themselves. With help from Sanosuke Sagara, Kenshin confronts Shigure one last time. After a while a teary eyed Toki runs in to embrace him telling him he's had enough fighting. Shigure succumbs to his emotions and breaks down saying that Kenshin had honoured Gentasu's death more than him. A squad of imperial police led by Captain Tomino (a police officer who had conspired with Kajiki to betray Shigure in order to get promoted.) burst in to the establishment firing at any opposition. Shigure shields Toki taking several bullets to his back. Shigure dies quickly afterwards whilst trying to apologize to Toki. Kenshin explodes violently nearly reverting to his Battousai form and charges towards Tomino. resisting at the last second to avoid killing Tomino. Tomino superior enters and arrests Tomino, meanwhile Kajiki's attempt to escape the situation is halted when he is killed by Hajime Saito.
Andy practices the Shiranui-ryuu ("style" in Japanese) Ninjutsu and a form of empty-handed ninja combat called Koppouken, which he trained in after witnessing his foster father's murder in order to gain revenge on Geese Howard. Mai Shiranui is his fiancée (in her mind), and the granddaughter of Hanzo Shiranui, the man he learned Ninjitsu from. It was after his foster father Jeff's death that Tung Fu Rue took responsibility for raising himself and Terry. Andy went to Japan to train under Hanzo and grew up alongside Mai, while Terry stayed in South Town. During Andy's time in Japan, he met the Muay Thai fighter Joe Higashi, and challenged him to a match. When Andy won, he invited Joe to return to America with him to enter the King of Fighters tournament, held by Geese. Before this, Andy had rarely, if ever, seen Terry in the interim since Jeff's death. Andy quickly grew jealous of Terry because Terry was taller, older, more experienced and quite possibly a better fighter, and unlike Andy, Terry did not practice a grueling daily training regimen. Late in the tournament, Andy tried to kill off Geese by himself. Geese's power proved to be too much for Andy as he almost fell to his death. Terry saved Andy, who finally acknowledged Terry as the better of the two brothers. Andy's emotions prevented him from reaching the final round, but when Terry defeated Geese, Andy felt a sense of closure and returned to Japan to continue his training. After Terry beat Geese at the end of their first King of Fighters Tournament, a new tournament was held, this time hosted by Wolfgang Krauser. Andy, while present in the tournament, did not accomplish much story-wise. Ever since Geese's death, the fall of the First Southtown, and the birth of Second Southtown, Andy has been busy training Hokutomaru through the ways of Shiranui-ryuu Ninjutsu and Koppouken. Instead of fighting in the tournament himself, he sends Hokutomaru in his place to see what his apprentice has learned. In Hokutomaru's ending Andy writes him a note saying that he was proud of how strong Hokutomaru has gotten. Then he ended the note by saying he is no longer his teacher but his rival and that they will cross paths again. (Source: Wikipedia)
Gentatsu Takatsuki was a hitokiri for the Aizu Clan and a master of the Kanuma Ryu sword style.
Mai is a sexy, busty, spunky female ninja warrior. Renowned for her big breasts, she trains under the perverted Jubei. She's Andy Bogard's girlfriend, and she is completely obsessed with him. She can be seen in the Fatal Fury anime and games, as well as the King of Fighters manga and games.