Compare & Contrast
On the surface, Henry and Sans are completely different characters... But once you start looking for similarities, you'll find a bunch.
Henry
Love at first sight!│
My usual "type" (i.e. big coat + gloves)
Bloodthirsty as fuck
No friends? Start a cult!
Weird fucking accent
Colour:
Chaotic Evil
Sans
Love at first sight... (but I didn't know it ┌)
Unconventional attraction
Doesn't like to fight
Friends with everyone
Weird accent = fanon only
Colour:
Neutral Good
Both of Them
Final boss (with best battle music)
Older brother trolling his younger brother
Super smart
Mysterious past
Central to plot twists
4th-wall-breaking
Forever in love with ME!
Being the Final Boss
Punishing fights, the most difficult inthe game. You must defeat Henry to see the true ending of NMH. There's lot of lore hidden in the G-Route, too... You have to defeat Sans if you want to meet the first fallen child— though of course this comes with its consequences.
Having the Best Battle Music
Great opportunity to sperg out about "We Are Finally Cowboys."
Alternately Trolling & Caring For Their Younger, Baby Brothers
Henry is more antagonistic towards Travis but they both love each other still... Honestly I think Papyrus would be happier with a brother like Henry— someone willing to spar with him! Meanwhile Travis doesn't like to fight so much as he likes to kill, so a laid-back brother who indulges his hobbies might suit him more. Man, can we get them to swap??? Hahaha.
Central to Plot Twists (Spoiler Warning!)
Sans reveals the true meaning of EXP and LOVE. His battle in and of itself is a plot twist, too. Could expand on this with Deltarune as well, the huge tonal shift in chapter 4...
Henry is not only married to Sylvia, he is Travis' twin brother...!!! We get zero time to unpack any of that. Even though the NMH series continued, we STILL didn't unpack it, hahahaha.
Breaking the Fourth Wall
Everyone in No More Heroes jokes about the fact that you're playing a video game so, within his source material, this isn't unique to Henry.