Lord X, he will always be my favorite due to his personality, origin, and design. He is an omnipotent god who has the power to do anything, yet he chooses to limit himself on purpose, he chooses the Sonic The Hedgehog franchise as his main appearance, playing with the souls he so calls his "friends". Judging and constructing his games based on his twisted perception of "fun". Yet despite such vulgar actions, he has a sophisticated side to him, playing the piano every once in a while and speaking with almost no form of slang, at least I think.
The creature was birthed from a mistake outside our universe, a place simply known as the VOID. A place in which our definements no longer matter. A place that exists between other universes. And Lord X knows some type of knowledge that is beyond our understanding, being created from that place. Perhaps, his perception of "fun" may be what's normal in the VOID and the other universes, but not in ours. And only he can represent such things through his actions.
Lastly is Lord X's design, something that is simple, but effective. Joedoughboi looked at the original Sonic.exe and leaned more into the "hyper-realistic" aspect by giving him things like disorganized blood tears, whiskers, messed-up quills, wrinkled shoes, and a decomposing design overall.
All these things combined is why I enjoy Lord X, taking our blue hedgehog with its 2011 creepypasta and transforming them both into a single threat that comes from a place we have yet to explore or understand in the real world, using a video game from our childhood as both a facade and as its main form to play with us, all for its amusement. Or perhaps there's something we don't know that he does.
This is why I enjoy the existence of the one from the VOID.