Hmm, lets go over some little details...
That MH, is that a LED Mirage in the first place (looks like one, but we'll never know...)? Problem is: LED Mirages are not planned for appearance in the Majestic Stand. There's no Blood Cross on the machine, so does it mean that the guy's not a MK? The symbol looks like U or Y, but I guess Upandora (sometimes spelt Youpandora) is not possible for various reasons.
hitori's guess that he is Waspen Nanda Crack, he's Left Wing 21 right? Indeed, there are rumours that he will be joining the MKs during Maj Stand! But Left Wing members increase so fast?! The next #22 is Decor's decendent (not even conceived yet)! It is stated that Crack's fatima is La Belda (ex-Ko Fan Shiemer 'Tin' fatima), but I dont think that fatima looks like Belda.
IMO the fatima looks very much like MK#15 Corlala's fatima Spaluta
, dont you think? I'm referring to the theme shown by the dress color and style, also her eye color. Her looks are very different though, but understandable, coz this picture was drawn many years ago. BTW, after Corlala and Poesche were killed, their fatimas might have been saved, prolly brought back to Greece?
Same guy that appeared in March2004 NT. He has the Amat family mark! A Royalty?! Also sports a flowery tattoo (slightly different in the NT), is this mark an emblem of the Codante's? From the Throne succession list, we have two of whom have not yet made any appearance, but they are closely related to Amat bloodline.
6th: Citron Menar Amaterasu (Head of House Menar)
7th: Harieri Byubyus Codante (Codante family)
However, my guess is not both of them. There was a line in the KF that says that during the Majestic Stand, even 'non-Mirage Knights Elena, Maessen, etc' pilots the Mirage Machines. My guess is Bit Maessen (ex-Pied Piper). IMO, a closer look reveals some similarities between them. After the battle in Emperor Rescue Mission, Maessen was probably brought back to AKD to recuperate, and somehow he now helps Amat (explains the family emblem, for his special access?) infiltrate Bughtgma. During his stay in AKD, he must have gotten Spaluta, who will be his partner for Mirage Machines (LED?). His original fatima Puula should still be alive too. Maybe Spaluta more suitable for Mirage machine or for security's sake, watever. =P
Anyway, that's juz my guess