Makoto Raiku (雷句誠 Raiku Makoto?, born 24 August 1974 in Gifu, Japan) is a manga artist whose works have appeared prominently in Shogakukan's publication Shōnen Sunday. Starting off an assistant for Kazuhiro Fujita on his manga Ushio & Tora, he started creating several one-shots for the shōnen manga anthology such as Bird Man (about a young pilot), Hero Ba-Ban (about a cheerful, but weak superhero) and Genmai Blade (about a teenage medicinal exorcist, of which he created both a one-shot and a two-part story). By 1999, he had created the series Newtown Heroes, which was published in Shōnen Sunday Super, a seasonal publication featuring upcoming manga artists and one-shots from the main Sunday book.
In 2001, Raiku started the manga series Konjiki no Gash!!, which began publication in Shogakukan's Shōnen Sunday, and in 2003, inspired an anime version (Konjiki no Gash Bell!!) produced by Toei Animation. Both versions are very popular in Japan. In the U.S., both the manga and anime are known as Zatch Bell!. In one chapter of the Konjiki no Gash Bell!! manga, Raiku makes an appearance with his own story, and also plays the role of Umagon's partner in the game, Konjiki no Gash Bell!!: Electric Arena (prior to the introduction of Kafka Sunbeam). In 2003, Konjiki no Gash!! received the 48th Shogakukan Manga Award in the Shōnen category.