As of now, Ranboo hasn’t said anything about revealing his face for any personal milestone or special occasion. He’s got millions of followers on the internet, so he’s had plenty of opportunity to do so. But his signature black and white mask did have an accidental slip in 2021.
According to The Sun, in April 2021, Ranboo’s mask slipped while he was talking and his face was briefly visible. The video is no longer up but plenty of people got screenshots. He doesn’t mind teasing his fans about revealing his face, though. He’s made content with YouTuber tommyinnit, who tried to pull his mask down while on camera.
In one video, tommyinnit and another YouTuber, Tubbo, can be seen trying to take down Ranboo’s mask, while in another video tommyinnit pulls down Ranboo’s mask but blurs the face before we can see anything. In fact, there are a few videos around where this happens. This is possibly a hint that Ranboo might do a face reveal one day on his own terms. But he hasn’t confirmed anything.