BL2 Key for Custom Character Head - GAIGE
PC: CBKBJ-6ZJW6-HKH3T-B3T33-F5ZRS
360: KB53B-TH5BB-KBB5R-WXT33-6HR9R
PS3: KTKTB-HTXFW-KK6CT-SB5JT-3R6XZ
BL2 KEY FOR CUSTOM CHARACTER HEAD - AXTON
PC: KJKJT-WHBKX-HC9BT-TJBJ3-XJFSJ
360: 5JK3B-S6KTB-5BB5X-CRTBB-FC3ZK
PS3: CBKJ3-XTXFW-5KRCJ-9J5BT-J3SRH
THESE ONLY WORK IF YOU HAVE TINY TINA'S ASSAULT DLC
Or you could just like Gearbox and borderlands 2 on fb and see these yourself. Also on twitter, follow shift codes, gearbox, and Randy Pitchford @DuvalMagic (he posts lots of 3 key codes) XD