Ben 10 and Rin 10, The Ultimatrix user

Basic Overview

Ben 10 and the Ultimatrix user follows the story of a teenage friend of Ben named Rin Allen accompanying Ben throughout many adventures through the various shows using an Ultimatrix that he found when Ben got the Omnitrix. The series began on Wattpad in September of 2020 and as of this edit has 40 parts spanning over the original series and the beginning of Alien Force.

Ultimatrix Features

At the current point in the series Rin's Ultimatrix has an unlocked master control feature that is somewhat exploited through his escapades as well as a hidden blade Rin uses in the event the Ultimatrix gets damaged beyond the point of safe transformations. The Ultimatrix has a feature similar to the Omnitrix from 5 years later with a side playlist called the Powerhouse Playlist consisting of a Saiyan transformation called MonKi, Way Big, Atomix, Highbreed, and Diamondhead. As with every other Ultimatrix Rin's has the evolution feature which is used semi-scarcely. Rin's most powerful transformation is Ultimate MonKi, a genetically perfect Saiyan locked into the Super Saiyan Four form.

Genetic Diversity

Rin is mixed race consisting of White, Black and Asian human DNA comprising thirty percent of his dna each with the final ten percent being Galvanic.

Allies

Ben

Rin has been friends with Ben for six years when they get their watches and would do almost anything for each other practically being brothers.

Gwen and Max

By virtue of being Ben's friend he is quite close to both Gwen and Max and they would go quite far for him almost as much as Ben would.

Albedo

Rin met Albedo shortly after a massive fight with Ben and was convinced to rob a hardware store to make a second Ultimatrix. Albedo convinced him to steal Ben's Omnitrix core to recreate a core for the second Ultimatrix. Eventually a massive battle is had that caused Albedo to be sent to the null void by Max. Months later during a battle between Ben and Rin versus Ultimate Kevin and Vilgax Albedo lends Rin the second Ultimatrix which is used to subdue Vilgax and Kevin. For that action he was freed from the Null void and allowed to travel with the gang. After the battle at mount Rushmore Rin and Albedo spent four years studying the galaxy before being called back to Earth by a reboot signal from the Omnitrix. Currently Rin and Albedo live in a house they built into a cave with full amenities.

Kevin

Kevin's first interaction with Rin was when he caught Kevin and Ben stealing from a warehouse leading to a battle in which Kevin sent a forklift into Rin's side causing rib damage. Later that same night Kevin absorbs The power of Four arms and defeats Ben. Rin responded by turning into WayBIg for the first time and throwing Kevin into a lake. Kevin ended up absorbing WayBig's power and brawling with Rin. By the end of their battle Rin had a fully charged cosmic beam pointed at Kevin's head. Kevin only survived this encounter because Ben urged him to accept Kevin's surrender, making him part of their group. Months later Kevin absorbed power from Rin and Albedo's Ultimatrixes and became Ultimate Kevin, presumably killing Rin as Ultimate spider-monkey. Kevin later teams up with Vilgax and drinks To'Kustar blood in a null void battle with Ben and Rin only being defeated through the use of Pesky Dust. Kevin later absorb's Vilgax's power, nearly killing him. Kevin raided null void prisons and thanks to instructions he was given by Vilgax at the beginning of their partnership he creates the Antitrix and uses it to cure himself and access individual transformations. In the battle at Mount Rushmore the Antitrix was countered Multiple times against Rin and rivaled by Ben, resulting in Kevin going back to the null void. In a latter battle at the train yard in Alien Force the Antitrix is destroyed by an exploding train car caused by Ben as Swampfire. After the defeat Kevin joins the tam and begins to re-assume his role.

Hope

Ex-Girlfriend of Rin formerly known as Charmcaster. They met when Hex stole the book of spells from the museum and dated for several years leading up to Alien Force. By the time the events of Alien Force happened she left a mysterious note which broke Rin's heart before she left to Ledgerdomain.

Villains

Hex

Hex and Rin only had one altercation that was when he tried to steal the book of spells which failed miserably thanks to Ultimate Swampfire who destroyed the Charms of Bezel and locked Hex into a coffin which he later picked up by the police.

Hope

The ex girlfriend of Rin, wife of Darkstar, and mother of Lamia is the mastermind behind the first few parts of the Alien Force part of the series. She was the mastermind behind the Sheriff Mason incident and the magical attack on Bellwood. She was defeated and fell back to Ledgerdomain in a battle with Rin in which her daughter was thought to be killed.

Darkstar

Husband of Hope and Father of Lamia was overloaded by Rin's Ki as MonKi and swore vengeance after Hope rescued him from his deformity and reconfiguration by opening a portal to Ledgerdomain. He was along for the magical attack on Bellwood and escaped back to Ledgerdomain after his daughter was thought to be killed.