UnicornLuvr223 is a Minecraft Youtuber who started making videos in late 2014, not too much of substance in the earlier uploads but around January of 2015 UL made a video trying to summon him, and despite doing it wrong (which commenters pointed out) videos following this showed signs of his presence, trees without wood, random glitches, and then he was spotted in the background of the video “Tour Of Mai World!!” posted on February 5th 2015.
This video wasn't in UL's usual style of editing, and after it was posted UnicornLuvr223 disappeared off the face of the earth and deleted every video on the channel. Luckily the team at Herobrine Herald saved some of them and may publish them at a later date to preserve this piece of history.
UnicornLuvr223 did not respond to any of the teams requests for comment, nor has UL replied to anyone online in the Herobrine Community who has asked for comment. We at Herobrine Herald express our concern for UnicornLuvr223 and hope they’re okay, whether it was truly real and him or not.
UPDATE (21/5/2016): UnicornLuvr223 remains the only case recorded on Herobrine Herald that was never confirmed false, and which seems to us to be the most real. We are still holding out hope for UnicornLuvr, if anyone knows UL or how to reach UL or has any idea about if this is real or not, please contact us.