Banha first reacted by attempting to blow up the Kakuja arm as best he could with his remaining explosives. Sure, it stopped it but he'd notice only portions were gone and red steam came out of the wounds. They quickly regenerated as it seemed like this member was a lot more resilient than her Kagune. At least he was disillusioned enough to quickly revert to a new weapon, as it became clear the projectiles wouldn't last super long with such a beast. The Owl grinned, seeing that plasma-like blade reminded her so much of the Quinque used by Kishou Arima to sever her Kakuja arm. The difference was that Arima used Quinque material enhanced with lighting and immense skill. This toy seemed strong, but no Arima.
But just to be on the unfair side, she'd purposely relax her RC cells on her Kakuja blade she had just regenerated to make it softer and easier to slice. Immediately, she'd attack Banha as they were already in close distance, purposely making it so that even if he'd just block, her blade could just be cut clean. She was gauging the blade's cutting power while purposely letting her blade regenerate exponentially faster than she normally did to attack immediately after as a surprise recovery. She wouldn't be able to so, however, as Ruiko didn't hesitate anymore.
"Haha! Bad move su- Wait what?"
Surprised, Eto would only see a flash before she'd be completely disintegrated right before their eyes. Eto would be instantly warped into the same plaza as Cyano, her Kakuja form dismissed but still wearing her dark red robe an many of her bandages still visible. It was the first time the female ghoul discovered this wonderful place. In a sense she was hoping to die in this battle just to discover this place, but she didn't expect what Ruiko release. Evidently this would interesting the Ethereal if it were around.
"Soooo, this is dead land?! Holy moly! I need to take a picture! If I can ... Just ... Find my ... Camera ... Aw crud I left it in th- Whaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat?!"
This behemoth of a man appeared and the goofy Eto was clearly caught off guard by his imposing being. It wasn't that he was big or ugly or just ... Intimidating. No, she was rather surprised, heck even intimidated by just how SHADY this weirdo was. If Eto was a little more of an anime girl, she would scream out that he's a pervert because why the hell not? She stared at it, her Kakugan on her right eye still activated to keep her Ghoulish nature clear.
"This guy ... He's so damn shady! Ugh! All this secret plan talking sounds super rapey. What is this, Cyano?! I thought we were friends."
The little ghoul kept an eye on the hulking being as she didn't seem to like him from the getgo. Nonetheless, if he knew her books she would still gladly sign an autograph because she was just a great person like that. Well, at least when she wasn't eating people in her penthouse or on the roof of a skyscraper while spewing maddening nonsense. Good times.
With Nathaniel pulling out his little army, the Ethereal waited a moment before having the Reishi city melt back into the shadows of the death Sydney. The whole area would have instantly reverted to its own, ruined self with no traces of reishi in the area. At least this individual wasn't completely deluded in his power trip, knowing full well he held no ground alone in Arcadia. He then went on to exhibit his various ... Minions. The Ethereal's powerful brain could easily stockpile all the information while scrutinizing the Magician's being. He seemed rather human, at least the psionic power of the alien didn't detect anything abnormal other than some artifacts on his body. The beings that stuck around next to him were quite particular, however. Definitely not human, though Nathaniel would come to explain that anyway.
With R-By's response through thought, the Ethereal judged that this individual wasn't that much of a threat here and now. Especially when he made himself as exposed as he is. Then again, snakes ran rampant around here.
'Unnecessary. Keep your assets. They'll be of use in other circumstances.'
While the Magician certainly displayed his worth, he also presented 'proof' of his word and loyalty. He spoke of an oath, and how such honesty was paramount to his culture. An absurd concept to such an almost completely unfeeling species as the Ethereals. Unconvinced but also not an expert in the field of magic, the overlord refrained from making rushed conclusions and left R-By, a connaisseur of such arts, handle the technicalities while the Ethereal registered most of it to review in a more peaceful time. Detecting possible flaws was an easy task for something with such an overly powerful mind power.
"It appears you two may have a better understanding of each other ass your particular set of skills and origins correlate at first glance. However."
The alien did take note of the capabilities of these imps, how they could be barely detectable and make keen spies against the opposing forces. An intriguing selling point if it were for Biollante, Muffet and Keith within their ranks. Covert operatives were already quite rampant, an addition would certainly be welcomed, but not an urgency. It didn't help that the Faceless from the ADVENT forces under the Über Ethereal were capable of rather extreme forms of mimicry of other beings.
"We are not in dire need of infiltration units. Muffet would judge your competence in that sense, regardless. It is unfortunate that your capabilities end at the basic ability to invoke the force of external beings. Or perhaps you, Magician, are hiding other things."
The alien turned its back on the stranger, proof of how confident it was of its position of power toward him. And slowly it advanced toward the shadows it came from with R-By, though the Muton Elites stuck around to assist the executive whom the alien appeared to be leaving behind. Though before levitating over the darkness created by the ruined building nearby.
"We leave the first judgement to you, R-By. If he is adequate, he may take part in Eto's Banquet. We will have impromptu guests, however, so we strongly suggest you make sure your intuition does not deceive you."
With that order given to R-By, the Ethereal vanished in the shadows, only to appear in its command center within the pocket dimension. The reason it left so early was mother because of the message it received concerning its commander, Eto. Apparently these 'guests' managed to not only kill her, but also the second Head Commander Muffet and Cyano. Knowing what this entailed in the Rivard Universe, the Ethereal wasn't anxious because of their downfall but rather the tool used by the Imperium to wipe them out so fast. It prepared to enter the scene, unsure as to what it would discover once there.