Although they are very active on Twitter often quoting their personal details, it seems that a member of at least Lizard Squad appeared on-camera in an interview.
The Lizard Squad made a massive DoS denial on Xbox Live and PlayStation on Christmas Day, stopping connectivity to millions of users.
During the weekend, the Sky News released a video an interview with a man named Ryan, who is said to be part of the Lizard Squad. A further investigation revealed that "Ryan" is named Julius Kivimäki, and is from Finland.
The hacker stated that the team currently has access to around 100.000 Linux servers, which allows them to carry out large-scale attacks, such as those on Xbox Live and PS networks. Kivimäki revealed that the Christmas Day attack "was basically done by three people."
According to him, the Lizard Squad has three or four members, and there are others except group that help from time to time.
The security researcher Brian Krebs with a publication trying to reveal the Lizard Squad, even presenting very interesting facts.
For example it states that “In a Hackforums post started by Omari on December 26th, using like name "Vinnie" mentions that he was given coupons by Megaupload, and wonders if the Hackforums rules allow them to be sold."