Horia Doru Popescu was a university student studying psychology and linguistics. He had a red, reversible coat; the inverse was blue. He was the victim of the DQ-5 incident.
Horia Doru was a very laid-back individual. He was very good at "reading the room" and could tell how his friends were feeling just by a look they gave him. He kept this to himself most of the time, feeling that if anyone knew he could do that, it might hinder their friendship or their friend's ability to express themself.
Despite his calm demeanor, he was very no-nonsense: if he had a problem with you, he would tell you to stop. This usually manifested as a very direct sarcastic joke, but there were times where he would drop the chill façade and seriously air his grievances.
Horia is an alternate spelling of "Horea", coming from the Romanian word for a specific type of dance. This was the nickname of Vasile Ursu Nicola, the leader of a peasant rebellion. He was eventually captured, tortured and killed.