Optronix was Jazzimus' friend that he fondly remembers (or remembered in a flashback he had.).
The two had good times early in The Great War, before Jazz was a Prime.
Optronix's rank at that time was 'Cadet', but now he's worked his way up. Boy, has he suffered alot in his megacycle.
Optronix and Veil would later face Trackrain and a mind-controlled Windcharger. Later, Jazz and he'd fight V-Trapzone and Shoutdown.