Time again for the FFF, or the formal fricking format. (Also, that's now the official ship name)

PROS: In an alternate way to what's suggested below, they could sort of give each other a reality check and both use the relationship as a means of self-improvement. :)

CONS: Both are very violent people that clearly need to get some help before a relationship. Considering their violent sides, this could very, VERY quickly turn into an extremely unhealthy dynamic that could only end with them and/or other people getting hurt.

OVERALL: Not sure if this is a good ship due to it having a high possibility of becoming very, VERY bad, sorry.

TRIVIA: LUIGI - When growing up, Luigi wanted to be his father. NATHAN - I don't have a lot of trivia on him, soooooo...Anthony Stewart Head is 6'1", but in his Repo Man suit, Nathan is mentioned to be 6'6". Therefore, the suit adds five inches, and with the approximate height by the helmet being two inches...PLATFORM SHOES. :0

HEADCANONS:

This dynamic is literally "Excuse me, he asked for no pickles." but with a lot more homicide.

Slasher movies. They watch slasher movies together, and a LOT of slasher movies.

When tired or just feeling sappy, Nathan traces over the scars on Luigi's chest with his fingers.

They tried to have a family game night, which resulted in a board for the Game of Life snapped in half and the spinner thing having a fist shaped hole in it.

Luigi wakes up early to make coffee, usually making Nathan a cup as well

Wallu had quite a glow up!