Eric and Dylan

They were considered outsiders at school and faced bullying.

Were into heavy music and computer games (Doom)

They kept diaries and filmed videos discussing aggressive fantasies.

They wore black clothes and had only a superficial connection with the Trenchcoat Mafia group.

withdrawn, introverted - less likely to take initiative in communication.

Emotionally vulnerable, often felt sad, angry and lonely.

He was influenced by Eric and often followed his lead.

He had creative interests: he participated in the school theater (worked as a lighting technician and sound engineer), and loved music.

He had a sense of humor (sometimes dark).

Prone to depression: experienced apathy, spoke of fatigue.

He was tech savvy and helped maintain the school server.

Outwardly he maintained a distanced manner, and could appear friendly, but did not open up completely.

Always looked at people with distrust

The leader in the pair set the tone and planned the actions.

Aggressive and irritable, he recorded anger and hatred towards others in his diary.

Organized and goal-oriented, he paid attention to details and achieved his goals.

Self-confident, he considered himself smarter than his peers and sometimes looked down on others.

Cynical and sarcastic, he loved caustic remarks.

He was interested in computer games (he created levels for Doom).

He was interested in weapons and explosives.

I was seeing a psychologist and taking antidepressants.

Outwardly, he could appear friendly and sociable - when it was advantageous to him.