So if you're ever expecting me to make this well don't get your hopes high. I hate how everyone downplays Garmadon and says that Darth Vader stomps when in reality it's actually a really close battle let me explain why Garmadon beats Vader even if it is him from the comics. Garmadon wins because of reason 1; the mega weapon. It can essentially create anything he wants and it is said to have so much power that no one can handle it at once (except for Garmadon) which means that if Vader holds it for a few seconds, he bites the dust; literally.
Reason 2 why Garmadon wins against comic Vader is because when he says “it’s the fight that fuels me” he is saying that as long as he keeps fighting he won’t be dying anytime soon. I do admit Vader does have advantages over Garmadon. He’s stronger (he was able to lift a mountain), faster (MFTL), and is more intelligent (although garmadon isn't dumb by any means). Garmadon is more durable to to him being able to tank just about anything Vader does to him or even force choke because of the fight fueling him. Vader is only around 50 years old whereas Garmadon is at least multiple thousands of years old. And he has stronger weapons due to the mega weapon. This battle is basically a Gandalf vs Dumbeldore situation. Gandalf the grey would lose but Gandalf the white would win. Garmadon without the mega weapon then Vader wins but Garmadon with the megaweapon then he wins. Vader maxes out at galaxy level at most whereas Garmadon is at least universal.
The only way I see Vader winning is by reading his mind and learning that his weakness is evasive maneuver. This is likely but I don't really see how Vader would willingly avoid all of his attacks and seeming like a coward.
"It's the fight that fuels me!"
-Garmadon
This isn't just a statement this is the real deal and I can prove it.
Back in season 9, he got blitzed by the Firstbourne's lava but it just melted upon him because he was in the middle of fighting.
In the exact same episode we saw that the only way Lloyd was able to beat him was because he was avoiding and dodging his moves so that the fight wouldn't fuel him.
Lastly in season 10 when Loyd and Garmadon are about to go into the oni cloud, he attacks Cole which makes the rest of the ninja fight him but then all of that was revealed to just be so that he could have his power once again and right after that scene Lloyd literally says, "It's the fight that fuels him."
I won't make this fight unless if I can make a rematch and that would be one battle without the megaweapon and one fight with the megaweapon so that both sides are satisfied. That would lead to 1 win and 1 loss.
Now if someone else makes this fight, then I'd probably just add a tabber because I am 99.9% sure that they're gonna make Vader win.
All in all I hope you guys understand this and hope you're doing well.