|Japanese name:||直枝 理樹|
Riki is the weakest of the original five members, but his starting attribute values increase on each play through and can eventually match and outgrow Kyousuke's statistics. He also has above-average values on concentration and judgment attributes, so coupled with some agility and reflex enhancing accessories, he can be a force to be reckoned with during battle. The player can raise Riki's statistics faster by hitting the balls to Kyousuke during baseball practice, which is needed to prepare for Mask the Saitō's battle. It is not very useful during the baseball game, however, since he must play as a catcher. If Riki manages to get Mask the Saitō's mask accessory, it will raise all of his statistics by fifty during battle, making him almost invulnerable unless he gets a sub par weapon.