Read a transcript of the interview here.
Tonight's interview and an interview in today's New Zealand Herald were the first chance for Dotcom to defend himself after being released from prison on bail.
Dotcom also told Campbell he is not going to flee New Zealand.
"The company that was worth probably a billion dollars plus has been given a death sentence without trial, you know, what point is there for me to run away? "
"I mean I am a fighter and I am going to fight this thing," he said to Campbell. "I feel confident I am going to win because at the end of the day I know, my family knows, and everybody around me knows that I am no criminal and I have done nothing wrong."
Initial reaction posted on Twitter was mostly positive.
"I'm totally in support of Kim Dotcom after watching the interview on Campbell Live tonight," wrote The B_tch Blog.
"I'm totally on this guy's side now, and I didn't necessarily used to be." wrote Matt Ward. "...What are the FBI up to? It's outrageous."
"More I see of Kim Dotcom more I like him. The whole thing seems pretty wrong," wrote Mike.
Even one of New Zealand's musical legends chimed in. Neil Finn wrote on his account, "Kim Dotcom represents himself with eloquence and good grace. I'm happy he's out."