@@Kyaaa_Skadi no HK417 or G28 is HK416 younger sister (the green hair) for detail you can see some bar event (i forgot that name). Shortly G28 have some same part from HK416 which make them a sibling (like M4 and M16) even they have very different personallity, they story in GF1 actually sadness. G28 actually just remember that girl with name "HK416" is her sister, but she is not longer know HK416 looks like or her personallity. It is because her memories get reset and she is even dont know that "HK416" is already disbaned from griffin Meanwhile HK416 even looks cold, she is actually really care her sister, but she is dont want G28 remember her or commander make G28 remember her again, because it will dangerous if they know each other. (and it will annoy her in mission if g28 remember her)
