Its existence still isn't necessarily unconfirmed given the fact that there are probably still mega stones they haven't given out, plus the fact that the game data can't be read I am also in angry denial, so I decided to theorize what Mega Porygon-Z could turn out to be

I'm shit with designs and anything I suggest will be crap so instead I thought about stats

There are two ways it could go, maximum glitch where the Dubious Disc data makes it go haywire, or proper program where its glitches get fixed and it works as intended for once

potential abilities
>Overcharged (maximum glitch)
>Moves that require a turn of recharge after use do not require that turn, but deal 1/8 of the user's health instead

>Perfected (perfect program)
>Normal type moves are not resisted or completely ineffective against any type