The streamer named Oblivion (also known as ObliviousHD) is 24 years old. His birthday is on September 13, 2000, and he is from England. This information comes from a biographical profile of the popular YouTuber and streamer known for animated films and gaming content.
There are other mentions of an Oblivion streamer age of 16 or 19 in some TikTok videos, but the confirmed and detailed profile with birthday is the 24-year-old British content creator.
Thus, the most reliable and detailed source indicates that Oblivion is currently 24 years old.
