There are pictures on Walmarts website that are under "Charlie Series" but show entirely new figures. Here's the description (since I can't post the link):
Reinforcements have arrived in the form of the Micro Action Figures Charlie Series by Mega Bloks Halo! One of eight new recruits, hardened veterans or alien marauders can be found in each mystery blind pack, each with their own detachable set of armor, devastating weapon and display block. In addition, two ultra-rare chase character variants may be found by lucky commanders! Each figure features a highly detailed, super-poseable design.
Mega Bloks Halo Micro Action Figures Charlie Series:
Age Range: 8 years and up
1 of 8 new recruits, hardened veterans or alien marauders can be found in each mystery blind pack
Each has detachable set of armor, devastating weapon and display block
2 ultra-rare chase character variants may be found by lucky commanders
Each figure features a highly detailed, super-poseable design
Master Chief in Mark IV (Official - From Halo Legends, like Fred-104 w/Booster Frame), Teal/Blue Orbital, Green Defender (JFO), Olympia Vale (Official), ODST (Possibly Buck or Romeo since Rookie and Dutch have been released and Mickey comes with the NMPD Pelican Set), Possibly Thorne (Blue Recruit with painted Forerunner Repeater).
They also show another set with a possible Kelly clone (can't tell), Noble 6 clone in Orange (Mark V/b), Dark Green Oceanic (like we haven't gotten enough repaints of this already), Purple Scout (Yet another overdone repaint), White Defender (Good new one), and on the covenant side, a Jackal with a Carbine (yes!), Possibly official Arbiter (Camo'd/ Transparent), and a Red/Purple Elite Ranger (New Articulated)