Andrei Rublev coached Team Satomi with an understated, zen-like approach, offering cryptic guidance and minimal direct intervention. This demeanor concealed his past as "Rocket G," a legendary IG-1 pilot who once raced alongside Sir Hamgra of Team Velshtein decades prior. His competitive career ended under undisclosed circumstances, triggering personal struggles with alcoholism and the departure of his wife and daughter.

Joining Team Satomi offered Rublev a path to redemption through his involvement with the young pilots. When midfielder Amy Stapleton was injured racing against Team White Snow, Rublev temporarily returned as an active pilot. Despite being out of practice, he displayed advanced combat techniques like flash-step maneuvers and strategically crashed his mech into opponents at critical moments to secure team wins, prioritizing pragmatism over idealism. His coaching tenure culminated in reconciliation with his family, brought about by his renewed purpose and stability.

Rublev also mentored forward Takeshi Jin, gradually revealing his identity as Rocket G—Takeshi's idol—and providing pivotal guidance during the pilot's emotional challenges. His legacy became intertwined with Team Satomi's growth, contributing to their back-to-back championship victories. Rublev resumed his coaching role as the team prepared for subsequent seasons.

The name "Andrei Rublev" bears no direct connection to the historical Russian iconographer beyond superficial naming.