Reworked champion speculation in Ekko Video

So first off let me start by saying the new Ekko: Seconds video is truly incredible, the animation, the lore and the curiosity it leaves are just amazing. Ekko looks like an awesome, mechanic breaking champion, but I want to focus on the large hulking brute ekko was fighting during that video

There has been intense discussion about who this reworked champion in, despite the communities best guesses ( ) we actually found out that it WASNT either of them, which only adds to my curiosity of who this reworked champ could possibly be, so after much speculation with my friends and I we believe the reworked champion is: !!! And here are the reasons why

#1 Zaun Tech. The brawler in the video is wearing some pretty hefty equipment that resembles something that Zaun would develop, Mundo's nickname is the literal the Madman of Zaun so this could be a indication that Mundo is the reworked champion

#2 Mundo's character model, so as we saw with the rework, Riot is tending to take the more "cartoony" characters and overhaul them to match the more realistic looking---higher quality character models, and while Mundo's abilities were fine per-say, his character model was really outdated, and contextually didn't make a lot of sense: A purple hulk on roids, that loves to inflict pain, yet is a doctor and is very illiterate. IF they did overhaul Mundo it would make sense to remove his purple skin and augment him with Zaun tech to inflict as much pain as possible while still retaining a kind of bane-like personality. If not Dr. Mundo then who? It technically a logical fallacy to ask that question but I have pondered it over and over again, who else could fit this role, if Urgot and SInged are out, SIon just got reworked and Vi is the opposite sex than who could possibly fill this rule better than Dr. Mundo? **HOWEVER ** All of this is intense speculation so please let me know what you guys think in the comments :3