I am currently going to make a full Toku archetype, but more generalized; like, one of those cards based off Kamen Rider Build will be based off Build's base RabbitTank Form. Any help on the name? And please, no "HERO".
The Nepfessor brought to my attention that you're attempting to make Upgrade Monsters of your own, but could use some help with them. I may not be able to go in-depth with the assistance tonight, as I have an early morning work shift tomorrow. What I will say, though, is that while you did grasp the basics for "Gyro Metal Marcher" alright, there are a few things you've missed.
I'll admit, some of this might be subject to change (based on what I might discuss with my beta-reader, once she gets home from vacation tomorrow), but Upgrade Monsters will be somewhat similar to Ritual Monsters in which they would have the following text: "You can Upgrade Summon this card with any [ALIGNMENT] Upgrade Spell, using "[name of Monster Card here]"." In the case of "Gyro Metal Marcher", I understand that it's of the DATA Alignment, so it would require any DATA Upgrade Spell to be Upgrade Summoned. However, I'm assuming that "Martial Metal Marcher", whatever it may be, is to be the "base" form of it.
The overall purpose of Upgrade Monsters is literally to "upgrade" base monsters, but give them the advantage of transferring their names to the Upgrade Summoned monsters. Like, if you were to Upgrade Summon using, say, "Dark Magician", the Upgrade Monster's name would be "Dark Magician" in addition to its current name. In that case, would "Martial Metal Marcher" be considered the "base evolution" of "Gyro Metal Marcher"?
Another thing is that most Upgrade Spells have a condition that would treat the Upgrade Summons as one being done by different-named cards. This is because some Upgrade Monsters would gain additional effects if they are Upgrade Summoned using a certain monster/card. For example, one of my own Upgrade Monsters, "Destiny Heroine - Chrono Girl", has a condition where if it's Upgrade Summoned with "Timegazer Magician", it would gain whatever effect will be gained. As such, it can be done with "Timegazer Soul", which treats the Upgrade Summon as being done by "Timegazer Magician".
I'd say more, but I have to hit the hay now. Please let me know if you have any further questions or concerns.