Kleve was a slaad in the Underdark during the Rage of Demons[as of when?].
Kleve acted as the loyal bodyguard of archmage Vizeran DeVir, thanks to a control gem the drow possessed. He was always at his master's side and obeyed all his orders.
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Christopher Perkins, Adam Lee, Richard Whitters (September 1, 2015). Out of the Abyss. In Jeremy Crawford ed. (Wizards of the Coast), p. 161. ISBN 978-0-7869-6581-6.