So I'm not sure if anyone posted this idea as a topic or not, so I decided to write about it. But has anyone noticed how the Titan looks alot like a STARWALKKERERERERERRRRR?!?!?!?!?!??!
Not the original though because that would piss him off, however I digress lol. As well as, from a post I saw someone tweaked the image of the Titan to look like Gaster, and ngl even before the Titan still looked like Gaster. There's also the idea that the Titan looks very similar to the Roaring Knight which is also interesting.
If y'all have more similar observations between Chapter 4's Final Boss and other characters, don't be afraid to say em here, have a good one!
He reminds me of Void Termina from Kirby
Not relevant he just does
Well, I've been looking if I could find something I have noticed but it seems there isn't much discussion about it. I have noticed that the sprite for the Ch4 Titan has man similarities/references to Undyne (gills, long hair, uses fish-adjacent attacks), which would make sense, due to the fact that she had been kidnapped by the Knight, and it would answer why they would need to kidnap people (first Toriel, then Undyne), so maybe Titan-making is a process that involves corrupting a Soul. Am I the only one who sees this? 
Such an interesting theory, its peak!!!
I think its a reincarnation of jackenstein
That could be cool
This could also explain GUARDIAN being the song title, and would fit with the Waterfall theme of Chapter 4