Nullchan (Нульчан), stylized as Øchan, was a Russian bulletin board that was founded by “EFG” and it ran from January 18, 2008 to April 1, 2014, died, then had a brief revival from April 1, 2017 to April 26, 2018. It used to be quite significant, but not so much nowadays.

The first iteration of Nullchan launched at “nullchan.ath.cx” using Kusaba on January 18, 2008, then it added “0chan.ru” on February 14, 2008. Following Dvach's death on January 17, 2009, the refugees were quick to bring over their shenanigans, but the servers gradually struggled over time and spammers would get Rozen Maiden threads temporarily banned, which arguably gave Dvatirech a significant advantage.

In 2010, the website updated Kusaba around July 16, 2010. In 2011, there were constant wipes, so Nullchan introduces a more complex CAPTCHA on November 11, 2011, but the spammers took this as a challenge, turning into a back-and-forth between them and the administration. This is also where the 'mint' (мята, myata) CAPTCHA was initially etched into Nullchan's culture around December 15, 2011.

Despite this, the situation didn't improve in 2012, since they now had deal with Sosach's MDK refugees, then Nullchan died on September 3, 2012 and the database was reset on September 30, 2012. They'd allow the community to pick its new domain, thus adding “0chan.hk”¹⁾ on October 30, 2012.²⁾ After that, the website kept getting DDoS'd in 2013, and Nullchan declared itself dead on April 1, 2014 with a Green Zero.

In 2017, a revival was teased at “mint.0chan.hk”, then Nullchan reopened on April 1, 2017 with a new engine allowing user-created boards, and “EFG” went on radio.³⁾ However, Nullchan still struggled to stay up, the moderation team kinda fell apart, then Nullchan declared itself dead again on April 26, 2018, leaving a redirect to Overnullch until they changed it,⁴⁾ then Lolifox, then the source code.

The 'Green Zero' was a Flash file that was featured on Nullchan's front page. If interacted with, the file would play a loop of one of the following tracks below, and the zero would 'pulse' along to it.

• Nullchan prides itself as a website for 'geeks' or 'nerds', even after the influx of Dvach refugees.
• Several mascots were created for Nullchan, but none of them were made official for technical reasons.
  • Null-cat (Нуль-кот) - A crude green tabby cat with the eyepatch and a cigar.
  • Null-sama (Нуль-сама) - A female junior researcher with short green hair in her mid-20s.
• There used to be a joke that the 'spam.txt' file was Nullchan's only moderator, as posting a blacklisted phrase would net an automatic two-hour ban.
• I might be misremembering, but I vaguely recall that somebody complained that their 'Green Zero' was on autoplay during the holiday season, saying that the music was too loud.

• Mentach

• Øchan [Archive] - The front page of the original Nullchan, archived February 18, 2014.
  • Øchan [Archive] - The front page of the revived Nullchan, archived December 7, 2017.
  • 0chan - The source code for the short-lived revival.
• Nullchan on Kolchewiki
• Øchan on Lurkmore + Øchan on Neolurk
• Øchan on Noobtype Wiki
• Nullchan on Wikireality