Tsu-chan is a fictional mascot character frequently associated with the Japanese internet forum 2channel (now known as 5channel). Designed as a cute, gender-ambiguous figure, Tsu-chan often appears in fan art and memes within the 2channel community. The character embodies the playful and anonymous nature of the forum, occasionally serving as an unofficial symbol. Tsu-chan's presence reflects the forum's culture of humor, creativity, and collective identity, making them an iconic figure among Japanese internet users.