Over arching Motifs

I'm not sure if the title of this article makes sense but it basically refers to weird literary or mechanical quirks shared by multiple characters.

Language Tick

Some of the characters in the game speak in Japanese while fighting. Instead of hand waving this I think it might be fun to embrace it and have them talking in Japanese in the fiction, but the weird properties of the game world mean that people who don't speak Japanese understand them and vice-versa.
To codify this in the game text their dialogue could be surrounded by greater than and less than symbols < >. This was used in the webcomic "Mega Tokyo" and any text between the signs meant that the person speaking was speaking in Japanese not English. <Like this>

Broken Timer

A few characters have transformations with a time limit (like the Ultramen) or a specific condition for how and why it works (like the Accel world cast needing to be playing brain burst to access their weapons and armor) I was thinking that for this we have the Game world Nullify those rules, allowing characters to transform for as long as they want, and even if they're not supposed to (since that's probably going to happen anyway)

Standard Size

In the game characters that are supposed to be giant (like Godzilla) are the size of a human person. I was thinking to explain this in the game it renders those characters to be roughly the same height as the rest of the cast.

Dialouge groups

This references groups of characters, put in groups for win quotes.

Demons

Characters with Demonic or Unholly Heratige:
Sesshomaru, Inuyasha, Cyber Naraku, Mukoro, Hiei, Saya, Kurama, for example.

Monsters

Characters whose Visual Appearance is monstrous:
Smythe, Man-Spider, Sho Fukamachi/Guyver I, Konshu, Godzilla.