Rintarou Namishima

Rintarou Namishiima
Japanese:	Namishiima Rintarō
Information
Gender:	Male
Occupation:	Student
Medarots:	Kantaros(Model Metal Beetle Type 2020) Arcbeetle Arcbeetle-Dash Mach Massive Tyrrellbeetle Holy Oracle (Medarot 3)
Nationality:	Japanese
Game appearances
Medarot R, Medarot 3, Medarot 4, Medarot 2 Core, Medarot S
Other appearances
Anime: Medarot, Medarot Damashii(cameo) Manga: Medarotter Rintarou!, Medarot R

Rintarou Namishiima is the titular protagonist from Medarotter Rintarou! manga being later introduced to the games in Medarot R and Medarot 3.

He return in Medarot 4 and Navi. And unlike the original version, he appears in the Medarot 2 Core remake, due to his participation in the anime.

He is a Hyper Medarotter, and participated in the tournment twice, winning it the first time and reaching 3rd place in the second time. His rank as a Medarotter is No. 2, being below Hikaru Agata in terms of skill.

He is known for owning and modifying a Metal Beetle Type 2020 that he names Kantaros, he soon loses Kantaros's parts and upgrades him to Arcbeetle, a Medarot that he invented. Ultimately, in Medarot Navi, he is revealed to have upgraded Kantaros for the third and last time to Arcbeetle Dash. Like Ikki, he keeps his partner's name every time he upgrades him.

In the manga

Medarotter Rintarou!

Rintarou is a boy that is an enthusiatic Medarot fan, idolizing Hikaru Agata. When he gets his partner, a KBT-0 Type 2020 model, he soon modifies him for more destructive power, and at some point he joins the Medarot Club at Kameya Elementary, befriending Sensei Tamawo Satou, Fusaku, Ruriyo, Hasuke Samejima and Mutsuki Kinna.

When Rintarou tries to join the Medarot club, Hasuke initially refused, only for Rintarou to battle him. This turned into a 3v1 robattle, with Kantaros taking on Doggie(Cyandog), Kuma(Betty bear) and Gorem-2. He ends up beating Doggie pretty quickly, allowing Rintarou to join.

Hasuke shows off a new part he'd bought for Doggie and later Rintarou and his friends meet Ruriyo, and fight her in a 3v3 robattle with Kantaros , Doggie and Gorem against Magentacat and two Sailormate.. Ultimately Kantaros is lest the last on standing against Magentacat and switching parts, he wins the fight.

At some point later Rintarou encounters Ryou Kaiba, a powerful Medarotter that won the Hyper Tournament.

Rintarou and Kantaros grew strong together and challenge the Hyper Tounament, defeating Ryou Kaiba and his KWG-0 Type 2015 model Mach Massive.

At some point later, Rintarou battles Hikaru Agata and Metabee (KBT-0), defeating them.

Medarot R and Medarot 3(manga)

Two years after the Hyper Tournament, Rintarou meets Ikki Tenryou and Metabee, and fights them four times. Despite being the stronger Medarot, Kantaros loses all his parts to Metabee, leaving Rintarou down in the dumps for a while.

Rintarou's friends tell him to design a custom KBT type, resulting in the birth of KBT-4X Arcbeetle. Rintarou keeps Arcbeetle's name as Kantaros anyway, and later challenges Ikki and his new KBT-3X model, Saikachis.