McFarlane Toys/Odd Pods Series 2
From Halopedia, the Halo wiki
Halo Odd Pods Series 2 are the second series in McFarlane's new "Odd Pods". It features The Rookie from Halo 3: ODST. They were released in October 2009. Odd Pods can be popped apart to have interchangeable heads, torsos and arms for countless customization possibilities, similar to how action figures have interchangeable armor.
Campaign
The Rookie
The Rookie Odd Pod is about four inches tall. It includes a M6C/SOCOM.
Arbiter
The Arbiter Odd Pod is four inches tall. It is armed with an Energy Sword.
Matchmaking
Spartan CQB
The Spartan CQB Odd Pod is also four inches tall. It comes in a red color and is armed with a Spartan Laser.
Spartan Hayabusa
The Spartan Hayabusa Odd Pod is four inches tall. It is blue, and is armed with dual Magnums.