This is a question that has been bothering me since forever. I have tried to find the answer to no avail.
Back in the DotA days, and now DOTA2, I've heard those (hilarious) voices. I have read in several sources that the voice comes from the first Unreal Tournament, yet I don't recall hearing them in that game. In the next few games, the same words wre spoken, but never the same voice.
Searching through the internet, I have found several sites citing tha those are the original voices, but they are not the exact same voices of DotA. I have heard those voices in HL mods (such as CS or TFC)
Were those voices recorded specifically for DotA? If not, from what game? Any proof or investigation regarding that?