Guardians of the Multiverse (Series)

The Guardians of the Multiverse Series is a series of stories made by MasterCaster and AP100 on fanfiction. There are currently two entries in the series.

Guardian of the Multiverse (GOTM 1)
Guardian of the Multiverse is the first entry in the Guardians of the Multiverse Series. The story follows a young Lincoln who is rescued by Ink, a strange teen who turns out to be an alternate version of Lincoln himself. Ink then shows Lincoln the multiverse's true reaches. Unfortunately, there is a villainous alternate Lincoln roaming around who goes by the name of Error. When the glitched up villain starts to attack once again, Ink goes off to protect that world from the monster's hand, leaving the Lincoln to explore the Ultra Dimension.

The Corrupted Puppet Master (GOTM 2)
The Corrupted Puppet Master is the second entry in the Guardians of the Multiverse Series. The story takes place a year after Guardian of the Multiverse, and we find out that the Lincoln that Ink saved in the previous story grew to become Ink's apprentice. The story is still in progress, so this summary must end here.