I just found Milo here, does that mean Spiral horns would dominat Thorny Armor? Would Spiral horns show or would they be carried?

Spiral Horns is M3 and Milo doesn't have anything in M3 so, at best, any offspring would have carried M3 Spiral Horns from your girl.

If we're looking at M1 and M2.

Milo has the following:
Mutation One: Dragon Wings
Mutation Two: Thorny Armor

The generator says these are as follows:
Mutation One: Dragon Wings = A - most dominant
Mutation Two: Thorny Armor = E - more dominant than F to I but less dominant than A to D

Your girl has the following:
Mutation One: Dragon Wings
Mutation Two: Back Spikes

The generator says these are as follows:
Mutation One: Dragon Wings = A - most dominant
Mutation Two: Back Spikes = A - most dominant

There's no issue with M1 as both carry exactly the same M1.

With reference to M2, your girl's Back Spikes are more dominant than Milo's Thorny Armor so any offspring that had the M2 trait passed from both your girl and Milo would show Back Spikes.

I just realized my error. I saw Thorny Armor and didn't see it saying Thorny Armor helm.

Now this guy has M1,M2 & M3: Hamilton

So would this be the best bet for dragon wings and Spiral horns? Sorry for asking so many questions. It's 2:34 in the morning and I can't sleep or think clearly for that matter.

Midnight's traits are all more dominant than Hamilton's traits so any offspring that have vis will have the vis that match your girl's carries.

Hamilton is a pretty good option (I noticed you can also purchase him - bonus!). They're a pretty reasonable match colour-wise too!

The only downside would be that Hamilton's traits are all carried so there will be a 25% chance that the offspring will have a visible as Hamilton will have a 50/50 chance of contributing each of his carries and Midnight will have a 50/50 chance of contributing each of her carries.

Okay! I understand the 50/50 chance. Thank you very much you've been a big help! *hug*

You're most welcome! Feel free to contact me if you've got any other queries :)

Alright thanks again! I bought him naturally. ;)