Virtual Dark Fortress - Virtual Dungeon

The Virtual Dungeon is Grimlord's first primary base. The footage of these characters is taken from the Japanese tokusatsu series Choujinki Metalder and Jikuu Senshi Spielban, two of the three such series that VR Troopers is adapted from.

After Karl Ziktor uses the orb on his desk to turn into Grimlord, he teleports to the Virtual Dungeon where his servants say "Hail Grimlord! Master of the Virtual World."

Among Grimlord's forces were a group of heavy duty robots known as Gunbots and Tankbots. These robots are commanded by Grimlord and Blue Boar and were most distinguishable by their bulky appearance as well as their massive built-in firearms. They mainly serve as backup or support during a battle whenever a single mutant challenges Ryan. These robots are often transported in black minivans. Among those in this category are listed below.

The Dungeon also has a self-destruction system (similar to a time bomb) that was used twice: The first was in Part 4 of the "Defending Dark Heart" mini-series, where Ryan and Tyler Steele (as Dark Heart) faced Grimlord, who set the Dungeon to vaporize; and the second was in Part of the "Quest for Power" mini-series when Ryan went in to rescue Tyler and Jeb, as Grimlord set the Dungeon to actually self-destruct with Ryan and Jeb still inside (they eventually survived). In both cases, the system utilized a 2-screen timer that showed the minutes on the left screen and the seconds on the right, and the timer was set to 3 minutes.