The Geomancer (also known as the Wiseman) is a recurring class in the Disgaea series. Geomancers are old men with the power to control land formation via the Geo Crystal on their foreheads. They are hard to deal with, as they are always looking for ways to make life harder for other people solely for their own amusement. This stems from Geomancers actually being far younger than they appear, having had their youth drained by their Geo Crystal. If one understands their Geo powers, they are nonetheless a strong ally.
- Main article: Geomancer (Disgaea 2)
In Disgaea 2: Cursed Memories, Geomancers are unlocked by doing a Geo Chain of over 500 and then passing the "Make an Old Man" bill in the Dark Assembly. They are adept at healing and Star magic. They also have numerous abilities that deal with Geo Symbols.
- Main article: Geomancer (Disgaea 3)
- Strider, this class's predecessor from Disgaea: Hour of Darkness.
- Onmyo Monk, this class's successor from Disgaea 4: A Promise Unforgotten onward.