Information moved from a blog post by Aggression25:
Earlier on this site, it said that Eren's Titan form was called the Rogue Titan, but on Eren's page, it doesn't say that. Is "Rogue" his Titan form's name or not?
Answer by 2.28.232.152:
My guess is that it was only called "rogue titan" at first as no-one knew it was Eren. They just saw a random titan beating down on its own kind. The word "rogue" just means someone/something that is apart from its kind and has savage/destructive tendencies, in short = Eren. Just like Annie, Reiner and Bertolt their titans are simply referred to as "their" titan form e.g Annie's Titan Form & Reiner's Titan Form. So now after knowing that Eren was the "rogue titan" it should now be referred to as Eren's Titan Form.
Answer by Aggression25:
Still, it would seem better to have his Titan form referred to officially as the Rogue Titan, like it is in fanfiction stories portraying him.
And you used the modifier way of the word "rogue", by the way, as there are other definitions for it.
One of the fanfiction stories that uses the designation of Rogue Titan, even from a narrative perspective is the Godzilla/Attack on Titan crossover story "Godzilla vs Titan 2".