The ranks are:

» Deku Scrub (Minimum Posts: 0)
» Gerudo Thief (Minimum Posts: 30)
» Goron (Minimum Posts: 100)
» Zora Warrior (Minimum Posts: 300)
» Hylian Knight (Minimum Posts: 500)
» Royal Hylian (Minimum Posts: 800)
» Sage of Wisdom (Minimum Posts: 1000)

To get a custom rank, you need to have been here for three full months.
Average Gamer has been here for over a year, so it's most likely he changed his CR back to Gerudo Thief.

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:: All around the country from coast to coast :::: People always say what do you like most? :::: I don't wanna brag and I don't wanna boast, :::: I always tell 'em I like the toast!::