I just finished playing Shadow Generations. I would like to add some keys for Shadow Generations to the pages for Shadow, Mephiles, and Black Doom. For Shadow, I would want to add a key for his Doom Powers(Referred to as "Doom Shadow" in this posts. For Mephiles and Devil Doom, they need keys for the versions that fight Shadow in this game. Doom Shadow would be 2-C at the beginning of the game. However, it seems obvious to me that Mid to Late game Doom Shadow, Mephiles, and Devil Doom need 1-C keys. My reasoning is as follows: The second boss in Shadow Generations is Metal Overlord, a being who is listed as 1-C for scaling to peak Adventure Super Forms(Shadow's Doom Powers grow more and more powerful throughout the game, so there is no evidence that Early Game Doom Shadow scales to this.) Mephiles provides a challenge to a version of Shadow that has grown more powerful than that. Some may argue that Shadow losing to Sonic after defeating Mephiles invalidates this, but Shadow is deliberately mentioned to have not used his new powers in that fight to even the playing field. Devil Doom challenges a version of Shadow who has defeated Mephiles, and grown more powerful. As well, it is mentioned that as Shadow grows more powerful, so does Black Doom. The final piece of evidence for a 1-C key for Doom Shadow and Devil Doom is Doom Wing. Doom Wing functions identically to a modified Super Form(Gives invulnerability to damage, slowly eats your rings, allows flight or gliding), and the Super Forms in this game are 1-C due to fighting the Time Eater.
I am posting this here, not in a CRT, under the advice of Antvasima, and because the CRTs are already done for the characters they are being scaled to. I would like to see some knowledgeable members weigh in on this. I also don't think any of this applies outside Shadow Generations, as Shadow loses his doom powers when he defeats Devil Doom.
My Source: