Trender Man is a meme and spinoff of the Slender Man. Unlike Slender Man he is not a horror character, but intended as a parody.
The origins of Trender Man can be traced back to Tumblr user Conjured Charisma who, on July 31st, 2012, took the pictured photograph and posted on his blog under the title "Slenderman’s Casual Friday". However the "Trender Man" name and the character's further relationship as a relative of Slender Man were coined on August 1st of that year by Tumblr user "I Lack Tact" as a response to another user commenting on the photo.
Trender Man looks some what like his brother/cousin Slender Man, but with a brown sweater (sometimes portrayed as a sweater vest), a white undershirt, and brown pants. His skin is also darker than Slender Man's, being between his white and a normal human tan skin. In some pictures, however, he is just as pale as his cousin. His clothes also change sometimes, since a fashionable person can't wear the same outfit all the time. Fans usually depict him with white tentacles. Some fans have also taken to drawing him with glasses.
He is often portrayed as a drama queen who can not stand people who go for the "swag" look or who wear crocs. He also is shown as somewhat self absorbed due to his fashion sense. He often becomes overly enthusiastic about helping others find better outfits so that others can become more fashionable. Whether this is because of a need to help others or an intolerance for what he perceives as unfashionable outfits is left up to interpretation.
Trender Man is sometimes portrayed trying to convince Slender Man to wear something more fashionable.
It is unknown if he has any special abilities other than his keen fashion sense.