When I first played COH, my very first toon ws a Tank named Purple Scorch.
I had absolutely no clue what a tank was, or what tanking was about - so every time I leveled, I added to my awesome damage inducing powers.
I rarely ever teamed with anyone - mainly because I was scared. So I would fight my way through every mission I could find, all alone.
Finally around level 40, I joined a team with 2 other players to knock out one of there missions.
We made it to the final boss, and I noticed my teammates were doing nothing - they were waiting on me to charge in and grab aggro. Of course, I didnt know this.
Finally one of them said to aggro. I did, and quickly died. They asked why I had no defenses and I had no answer. I didnt know.
Since we couldnt get past the final boss, the team disbanded. I quickly respected, and plodded my way to my first 50
I once again have a Purple Scorch. She's a Tank, and knows exactly what she's doing :)
