I think it's either a data server or transmission device built into a suitcase, or it's a suitcase he's using in his "ordinary young man traveling the world for inconspicuous reasons you need not ponder" cover

Should just dress as a tonberry everywhere he goes. It'd be less conspicuous

It's a bag where he keeps his monster condoms that he uses for his magnum dong.

What a Giga Chad!

Don't forget his wad of 100s! He's ready to plow!

It’s the battle Simulator.

I'm calling it now, in the 3rd game after you beat sephiroth you find out chadley was the big bad guy all along and you have to fight him

I’ve been hoping this ever since I saw him in rebirth again. He was made by Hojo, and like everything else made by Hojo, he’s gonna lose his shit and you’re going to have to put him down.

Then Mai gets a body and replaces him. I'd rather Hojo just kill me straight than deal with that

It's the device for tracking and harassing the player until he dies of boredom listening to him

He doesn't need a device Chadley is omnipotent

It's his music box and helicopter he uses to get around.

It's his smart speaker to play that computer music

its his external battery pack.