Arthur (Wreck-It Ralph)

Arthur (also known as the Wreck-It Ralph Virus) is the main antagonist of Disney's 57-full length film Ralph Breaks the Internet. It is an insecurity virus that was made to duplicate and spread throughout everywhere that is to be infected.

It was voiced by John DiMaggio (in its original form) and John C. Reilly (through clones of Ralph).

Role
Following the unplugging of Sugar Rush due to a broken steering wheel, Wreck-It-Ralph and Vanellope Von Schweetz (the game's former princess) traveled to the Internet through a Wi-Fi router, where they made a purchase of a new steering wheel that will save the game, and that they have 24 hours to come up with the money. To that end, Ralph posted several videos of himself to get on the top trends to earn more money.

However, Vanellope take solace in a new game called Slaughter Race and takes a strong interest. Though Ralph finally manages to earn enough money to buy the wheel (despite getting several bad reviews), he is distraught to learn that Vanellope has decided to stay in Slaughter Race rather than returning back to her game. Desperate not to lose her as his friend, Ralph turns over to the Dark Web, which is ruled by Double Dan. Upon hearing of Ralph's intentions, Double Dan presents him with his latest virus dubber Arthur, warning him that it can analyze any imperfection and spreads it to other parts of its surrounding area. Ralph releases Arthur into Slaughter Race, and it scans Vanellope, inheriting her glitchness and allowing itself to wreak havoc on Slaughter Race. As such, Slaughter Race is forced to be shut down and rebooted, and Arthur is presumed to be deleted.

Vanellope eventually finds out what really happened and berates Ralph for his actions before breaking his friendship with him, much to his discomfort. Having survived the shutdown, Arthur secretly spots Ralph and scans his insecurity over the loss of his friendship with Vanellope. Taking the opportunity, Arthur duplicated itself into countless clones of Ralph, scourging the Internet in a rampant search for Vanellope, and breaking off people's connections. Upon realizing what's happening, a remorseful Ralph decided to take action by luring the Ralph clones into an anti-virus software (with the help from Vanellope, Knowswhere and Yesss).

Unfortunately, Arthur caught wind of this and assimilates the Ralph clones into a gigantic version of Ralph to capture Vanellope and climb up to Google Tower to keep her there. Ralph tries to stop Arthur from doing any further damage, but this only incites an angry Arthur to manipulate the clones to grab Ralph, intending to crush him to death. However, Vanellope begs the Ralph clones to spare Ralph by promising to be his friend. It was then Ralph calls out on his clones for his selfish possessiveness towards Vanellope, and that it would be best for himself to let Vanellope make her decision to remain in Slaughter Race that he would have to stand by it no matter what, a revelation that touched Vanellope.

Having reconciled with Vanellope, Ralph lets go of his insecurities, and the Ralph clones peacefully disappear, causing Arthur to be finally deleted from the Internet for good. Ralph would later be rescued by Spamley and the Disney Princesses before parting ways with Vanellope, and the Internet is rebooted back to its normal state.