Sorry for the confusion! Guts is a setting rule from Deadlands but it's a pretty easy one:
You add a new Skill to the game called Guts. Instead of making a Spirit check to oppose Fear, you make a Guts check. That's all it is. Hope that helps!
Scale and Size are intentionally different things. A Size 3 enemy will have the same Toughness and such regardless of its Scale. Basically it was just a simple way to say "It's time to get in the Giant Robots" that sentai really popularized.
In short, Size does not equal Scale. Scale has zero mechanical weight EXCEPT when comparing it to the Scale of other creatures. Giant Scale threats can hit Hero Scale characters, but Hero Scale characters cannot deal damage to Giant Scale Threats. That's it.
Does that help?
We offer a printable version on DTRPG at this link:
https://legacy.drivethrurpg.com/product/472146/delve-deck-dungeon-mapping-and-en...
Please do not go to a third party printing service. We provide print and play options for home printers, but anything else would be preferred to go through DTRPG.
Having run some Ultraman inspired stuff during playtesting, I think I'd just keep it simple and use the Scale rules. Mundane is when you're a normal lil fella and then I'd just jump straight to giant for when you're a big ol' fella.
But... if you wanted to get spicy with it? I'd have everyone make one character with the normal rules, but then use the rules for creating a Kaiju to create their "Great Hero" form. Then I'd fight them with Kaiju. I like this approach because it leaves some fun options for military intervention so you can run asymmetrical combats that feature human reaction to giants fighting.
Hope this helps!
BPB Games would like to submit Savage Tokusatsu and its associated adventure: Shimmer Guardians
https://bpbgames.itch.io/savage-tokusatsu
https://bpbgames.itch.io/savage-tokusatsu-shimmer-guardians-adventures