Yuri is the brother and minion of supervillain Noah Zark[1].
While pursuing Zoë and Gwynn, the Smegway scooter Yuri is riding tips over and explodes, mortally wounding him. Noah saves Yuri's life by using Red Durango to transfer his mind into the body of a squirrel[2].
Yuri attends the auction of Dr. Shankraft's Displacement Drive Vehicle as a representative of Zark Industries.