I would say there are 3 gruntees/pugs that stand out in my mind as up and coming orcs... (there is a 4th, but he's on his grunt quest with me so I won't include him).
Guban - He's a good little Cuban commie, knows how to listen to orders, knows the language and rules.
Grugh - he's not a commie, but he has all the traits from above.
Grognak - again, not a commie, but what can you do. He listens, knows rules and language.
Another positive note on all these orcs, they are very active.
Keep up the good work! You'll be grunts before you know it!

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*prays to the Giitz'Krieg*
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Wun gambul? *pulls out special dice cup*
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Yubgug: Id wuz da Boogie Oomie!
Thurg: *wets himself*