Hans

A High Temperature Trooper (HTT) who

is indebted to the secret organization "Silver Wheel". As an HT Trooper, he and his fellow soldier were given a flame thrower and a protective suit. The suit, however, did not protect against the flames, a fact the Kauplan Institute covered-up by filling the suits with a fluid impregnated with analgesics.

After the cease-fire, Hans's fellow soldiers took off their suits, ignorant of their life-threatening burns, and perished. Hans, having delayed taking off his suit, realized that to remove the suit was to die and spent the years since the cease-fire inside it.

(source: Wikipedia)