Ro En is an old man with a gray top knot. He has a chin beard and a mustache which is also gray. Along with ear rings in both his ears.
Ro En is a calm and content person who is very knowledgeable in warfare due to being a veteran of many battles.
Ro En joined the Hi Shin Unit during the Bayou arc and has been with the unit ever since.
Ro En is a veteran of many wars, he has gained much experience in a variety of tactics. This makes him an advisor for Shin and the other leaders of the unit to turn to for advice.
"The better trained an army is the greater the soldiers adhere to it's command structure. But in exchange the army will also not be able to utilise it's true strength without orders from above. Furthermore, when you have asmall unit break into such a densely packed area there will be even more disorder."