The Reboot World POG Federation milkcaps are kind of well-known in the community and are highly collectible, especially the kini slammers. Recently I encountered these licensed Skips Flips milkcaps, which were produced in the UK.
A few of the caps have early character models that I had never seen before, mixed in with the more contemporaneous promotional artwork for 1994. These older models seem like they were made before the third promo reel.
Indeed, this Hexadecimal render is shown briefly in the video.
Mike the TV and Megabyte even more closely resemble Brendan McCarthy's concept work, which you can see in Art of Reboot here and here. Note the construction of MB's torso, forearms, and the ports on his clavicles for the removed cables. Present in the third reel, MB and Mike have their final designs and are indistinguishable from their appearances in Season 1.
Reboot Skips Flips Gallery