Not really a Perk but if your the Japs on any level instead of Dogs, You get a group of Jap Banzia Attackers....
Yes/No?
On Topic- A Perk called RAGE ( After getting a seven or ten killstreak, You get the Beserker but you still get a weapon and you have Unlimited Ammo & Health and you can Sprint for ages, BUT to keep the Beserker going you have to keep on your Streak.