Dr. Kleiner - Half-Life Wiki - Neoseeker

Isaac Kleiner - Combine OverWiki, the original Half-Life wiki and Portal wiki

Isaac Kleiner, Half-Life Wiki

Isaac Kleiner, Half-Life Wiki

Isaac Kleiner - Combine OverWiki, the original Half-Life wiki and Portal wiki

Powered by Valve λ on X: Fun fact: Dr. Kleiner was originally meant to be in HL: Alyx but was cut during the later stages of development / X

Isaac Kleiner, Half-Life Wiki

Isaac Kleiner, Half-Life Wiki

Stalker - Half-Life Wiki - Neoseeker

Half-Life: The Lore Behind Isaac Kleiner

Half Life 2 [Dr. Kleiner] Voice Clips

Isaac Kleiner, Half-Life Wiki