He has a calm, Nihilistic persona but becomes fierce when angered. His cool attitude makes him the more reasonable member of the Death Caprice Squad, but when set off he tends to become even more malicious than even Kaido at his worst. Due to this contrast of character, Ryo tends to seem very unstable.
Ryo is very intelligent and if Ken is the muscle of their duo then Ryo is most certainly the brains. While Ken is all for rushing in ahead, Ryo prefers to study the situation and examine his enemies thoroughly while devising a strategy. If there are weakpoints or tactical exploits to be discovered then it is always Ryo who reasons these out and relays them to Ken. Due to his overall cool attitude he tends to be the "face" of the Death Caprice Squad when dealing with superior officers.
Biography:
One of the two main pilots of Mazinkaizer SKL and the other half of the Death Caprice Squad. A man with a mysterious past, he is very skilled with handguns and takes control of SKL in order to use its Breast Triggers in battle. "Lucifer 4" is the code name originally given to him by the WSO. The Federation has retained this as his callsign. Though he was initially weary of Ken, the two have quickly bonded and truly act as one while piloting SKL (at least in most situations).
Ryo's past is shrouded in complete mystery unlike Ken. He was already assigned to pilot SKL when Ken was brought in and even Ryo himself seems uncertain on the full details of his own past. Rumors were frequent around the WSO that Ryo held some deeper tie to Mazinkaiser SKL itself. Ultimately, like Ken, once SKL was put into use all files relating to Ryo were destroyed.
Since arriving in the alternate universe, Ryo has kept the same cool attitude as always. With no way to return to their own world any hopes of learning more about his past have been lost. Without this goal in mind Ryo has thrown his lot in entirely to Mazinkaiser SKL alongside Ken. Unlike Ken, however, Ryo has taken a great interest in the political situation of their new home and the other factions threatening humanity. When given the chance and time, Ryo has begun taking active efforts to learn more about the world they are in so he might better understand things.