Where is DrillMan V3 in MegaMan Battle Network 3

DrillMan V3 can be found during a random virus encounter in "Hades Isle" (the area that connects to the Undernet and where you had to use "Press" to find the data during the N1 GPX). It is recommended that you use the SubChip "SneakRun" or equip the Navi Customizer program "SneakRun" (or use the Sneakrun EX code) in order to find him more quickly.
You can only find him after defeating DrillMan V2 in Undernet 6 underneath the Bug Frag dealer.