IlliterateOne

Let me get this straight... the mc gets stuck with Rosalie, Evelyn is now paired with the dude who offe'd her, and Emmet gets Evelyn thrown at him as if she was some consolation price for having his girl taken? This is just dumb.

What is the point and obsession with f'ing swords when he can dismantle people with his bare hands?

Pretty much, ultimately, Kenjaku would probably just wait until they all died before going through with his plan. Since Tengen would transform into a curse, all he would have to do is either what he did in canon and attempt to take anyone that could stop him from kidnapping her out of the picture or just wait a little more until their lifespans run out.

Maybe he can just adopt them as well. He's already going to be taking care of two children who aren't biologically his, so he might as well add a couple hundred more to the roster.

Sure, it's your fanfic, and you can change the story in whatever way you want(I'm never going to argue against that), but my point still stands. You said that it didn't seem in character for MG to do what she did. I am saying that she did all of those things in character within the confines of the plotline within that ark. Whether someone considers her actions good or bad is up to an individuals own perogative, but it wasn't "illogical" as you keep saying. Illogical means lacking in sense or clear sound reasoning, and the story gives the reader plenty of reasons as to why she took the actions that she took and it's up to the reader to decide how to view them. I personally don't like the way that plotline turned out with the cheating either. But I just wouldn't claim that it doesn't make sense, is illogical, or came out of nowhere because it isn't any of those things... and that's just an objective fact. You might personally feel like what happened was unfair to Robot, but it is what it is, and that's that.

I personally find your way of thinking illogical and surface level. Robot and Monster Girl had spent 700 years inside of the flaxan dimension. It was stated that throughout that HUGE span of time, she had grown resentful towards Robot for multiple reasons, which led them to constant infighting. They 100% changed as people after what was essentially multiple entire lifetimes stuck there, but you're acting as if it was a weekend in Cabo. Hell, their little stay in that dimension was what gave Robot a taste of authority and made him go all power-hungry. But forget that let's just focus on MG since she's the main topic of conversation. First, she wanted to leave the flaxan dimension and didn't want to continue fighting the flaxans yet Robot wanted to stay and finish the war, There's also the fact that after the war ended he decided to stay and rule over the flaxans; all of this despite the fact that after all the time they spent there MG couldn't even fully learn their language due to how complex it was, Robot's brutal treatment of his enemies and the previous flaxan royal family in the flaxan dimension which she didn't agree with, Robot also admitted to the fact that he had been way to focused on ruling and had been neglecting her, and even the fact that he couldn't give her a child after all that time apparently due to his clone physiology also comes into play here. Within that little timeskip ark of a story, their relationship and them as people were deconstructed and deconstructed multiple times over and over again. They were definitely not the same people that had been stranded in the flaxan dimension all those years ago, and the story points that out multiple times. Just because you just didn't like that plot development, you can't just gloss over it and say it doesn't fit her character. The writers gave plenty of reasons as to why things ended the way they did between Robot and Monster Girl. You just didn't like the fact that MG, one of the hottest characters in invincible, cheated on him with an alien, and that's 100% valid(cause the alies in invincible look kinda gross), so let's not act like there's a deeper more intelligent reason for for you wanting to change that.

Does he have a lazy eye or something?

SILENCE VIRGIN!!!!

This has some serious "you wouldn't like me when I'm angry" vibes... in the sense that if I see someone talking like this about themselves, I'd just laugh in their face.