Grunts difference?

In hammer, there are npc_human_grunts, npc_human_grunt2 and the same for npc_human_commander and npc_human_commander2.
Is there any difference between the grunt and the grunt2? They also seem to use a models/humans/marine.mdl and a models/humans/marine_02.mdl model.

Silly small question, but it’s been buggering me a bit.

All the different male NPC faces couldn’t fit on one model, so they split them into two. The different models are different NPCs so they work properly with the character creation system. Shouldn’t be any different than that.

Ah, cool.

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.