Sora's Heartless is somewhat disturbing, considering how nice Sora himself is.
The data version of Castle Oblivion is in some ways even more disconcerting than it was in its original form, because the illusions don't actually work on Data-Sora, resulting in a jarring disconnect between what its inhabitants are saying and what he actually sees.
In Agrabah, Jafar gets a hold of a glitch-created copy of Genie's lamp, and promptly uses it to freeze time. Data-Sora then has to race against time in a monochrome-green, almost completely silent Agrabah, whilst dodging harmful apparitions of Jafar.
In the HD remake in Hollow Bastion when Data-Sora is Keybladeless, he, Donald and Goofy (Who have shown up to help him fight) confront Pete who ends up trapping Donald and Goofy in Bug Blox meant for Sora and he attempts to kill them and almost succeeds by crushing them in the Blox.