Kali Linux is an open source project that is maintained and funded by Offensive Security, a provider of world-class information security training and penetration testing services. In addition to Kali Linux, Offensive Security also maintains the Exploit Database and the free online course, Metasploit Unleashed.
bolexxx has been administering the Kali forums (and previously BackTrack forums) for over 7 years now, keeping the forums running and spam free.
steev does our ARM development for Kali Linux. Steev has been working with and on arm devices since 2009 and is also a co-lead of the Gentoo ARM team.
g0tmi1k has been a helping hand and active member since the days of remote-exploit and was promoted to a staff member in 2010.
Sickness is an object of torture and abuse in Offensive Security, and often gets the bad end of our masochistic jokes. He also does kernel exploit stuff.