Feat found in this stage. I'd like to use it as support for my own personal scaling

If it helps any, Classic Sonic should be about 75cm, about 2'5 or so (and at most 3'3 as per the height of his Modern counterpart.) The Egg Mobile seems comparable to his size in this specific game, tho a little taller.

it also performs a faster version of this feat, but I think this one is a good middle ground

Let me preface this that I don't personally think Infinite is reliably stronger than people like Solaris and people like him, but I do think he gets a lot of downplay with the whole "erm, BASE SONIC beat him bro!!!" and such. Therefore, I want to make this post to highlight that Infinite is indeed worthy of the title of Eggman's ultimate weapon, and how I would scale him. I might not get every little detail but there should be a lot here. I would like to note that I'll mainly use a translation done by Windii, who has made many other translations on the Sonic franchise and I would encourage you to check them out! but you should be able to get similar things from the English localization.

Before anything else, let's establish Infinite's Phantom Ruby Prototype. Eggman had continuously worked on the Phantom Ruby Prototype before incorporating the finished product into Infinite, and even used energy sources such as the Death Egg itself to power it. He even saw it as enough to build multiple spare power sources for Infinite.

So let's go over Episode Shadow. Infinite effortlessly deals with Shadow and Omega, stating that Omega is "no better than a tot" and toyed with Shadow, and this was before he and Eggman even tuned it. Stating he has unlimited power and that he had no match, being the mightiest of all, and is confident that not even Sonic will be able to defeat him.

At the start of Sonic Forces, Infinite clowns on Sonic. Sonic is completely unable to land any attacks on him with his homing attack or boost, Tails even doing his whole "this guy is faster than Sonic!" Sonic even has trouble properly reacting to the guy, where he could at least react to Metal Sonic, Chaos, and Zavok. We then get Infinite dealing with Silver once again taking down another strong character. Sonic, however, intercepts Infinite and now he's far stronger than before, finally able to start landing some hits on the guy with techniques Infinite previously avoided effortlessly. Infinite even confirms Sonic's abilities exceed his previous data, with Sonic agreeing he grows stronger, with Infinite still holding his head in the transition to the cutscene. But despite Sonic's massive power growth, Infinite beats him.

There's not much to cover until the end, other than the cast trying to weaken Infinite and a showdown between the Rookie and Infinite, where the Rookie faces their fears with Sonic's influence. (my goat fr)

Now we're at the end of the game, Infinite still showcases his power when he deflects Omega's lasers and knocks everyone away. He then makes a virtual sun with the Phantom Ruby's power that will destroy the Resistance. However, this uses up a lot of his energy, and Tails notes that it's a golden opportunity to defeat Infinite. Sonic engages in battle, able to fight on about equal terms, but Infinite's power recharges, where the Avatar steps in to help, and the two ultimately defeat Infinite with a Double Boost. What I like about this is that Sonic may be extremely strong, but if he's having trouble, he'll have his friends to back him up. Meanwhile, Infinite has nobody to back him up, he threw everything away for power.

Then we have the Death Egg Robot, who surpasses Infinite and overclocked the original Phantom Ruby to make thousands of him, with Sonic, the Rookie, and Classic Sonic fighting and dealing damage to it.

So what does this all show us? Well, Infinite was defeated by "Base Sonic," sure, but it ignores a lot of how they got there, it ignores how Sonic first got completely clowned on, it ignores how everyone was trying to weaken Infinite, it ignores Sonic having to get much stronger to even touch the guy, etc.

So, Infinite scaling. This'll be less about the tiering but who he can scale above. Eggman himself says Infinite is his ultimate weapon, so we can solidly place Infinite above anything Eggman created by himself with little to no external support. Such as Gemerl, Super Egg Robot, and True Area 53 Boss for example. He also effortlessly beat Base Sonic and was stated to be Sonic's most powerful enemy yet, an external statement that is backed up by everything here. We can use this to say he's stronger than all of Base Sonic's enemies making him much stronger than previous base foes. These include Erazor Djinn, Master Core: ABIS, Nega Wisp Armor, Egg Dragoon, Emerl, Adventure Perfect Chaos (Gens), and so on.

Of course, maybe you can make the argument that Infinite (& DER) > Egg Salamander, Wizard, and Time Eater since they fall under his defeats and weapons, but overall I think this is the most solid thing.

Before we start, I agree Erazor Djinn scales pretty high, I'd say he's solidly Universal to possibly low-multiversal, and planetary with downplay. However, I've seen "Erazor Djinn absorbed 1,0001 Universes" thrown around and at first I believed it, but this isn't actually the case I think. Let's look at why this is:

First off, different stories/worlds are visible from each other and regular people seem to be able to casually travel from them. This doesn't mean some other stories don't take place in other realms, but a lot of them take place within the main realm.

Next, Sonic's statement of "worlds of endless adventures." Firstly, this was likely just a metaphorical statement since it's supported by the previous point and that he was talking about the sheer variety in the world of the Arabian Nights, from genies of flame to pirates. But also, that the original Japanese script just says "a world of endless adventures."

Finally, we have the Prima Guide statement of "an infinite space," but the big problem here is that the Prima Guide, is, well, a Prima Guide. It's not a very reliable source and there's not much in-game to support the hallway being infinite.

So how big is the Arabian Nights actually? We have three (technically 4 or 5) realms, the main realm which a majority of the adventure takes in, including a planet, the moon, the sun, and starry skies. We have the Spirit World, which is said to be the spiritual part of the world and is seemingly connected to Night Palace. It visually contains innumerable stars and Big sees it as the Milky Way. We have Jahannam, or hell, mentioned by Erazor and Sonic, and is where the Ifrit Golem comes from. Finally, we have Lost Prologue which is a space that connects the Book World to Reality, and the Night Palace door that also connects reality and the Book World.

So all in all, the Arabian Nights contains 3 realms that are considered part of the world, and 1-2 things in-between. As we know, Erazor Djinn was reaping the words of the book and was absorbing the power of the book, causing the world inside to be erased. He also seemingly controls Night Palace, which likely encompasses him controlling the Spirit World. I would also even like to note the World Ring of Sadness was located in the Spirit World. So, while we don't have the 1,001 universes, we have a solid Universal to possibly Low-Multiversal feat for our favorite blue hedgehog, which is still really good!

Edit: Bolded a few things and adjusted my wording at some points, pretty much the same thing.

Image 1: Reference to a Dragon Ball cover. Also meant to be a "what-if" scenario where the real Sonic enters Sarah's world after a "bad-end" of the series. Sarah has refused to move on and continued to harm others, and Sonic recognizes that, so the only thing he can do is take her down and turn a bad ending into a neutral ending. This one I'm pretty happy with, so I put it first!

Image 2: The first doodle I made. Sarah's design is based off of the old U.S Sonic covers as well as some more recent art by ShutupJojo, particularly the palette and somewhat the eyes. I wanted to help carry a "twisted circus" vibe with her design. Also some lazy doodles of what could be her outfit in the 60's.

Image 3: Possible Luther design. Since I did the U.S thing with Sarah, I decided to do it with Luther. I ended up removing the tails since I felt the design would get a bit too overwhelming. I also wanted to show him being an old ass man here lmfao