There was apparently a Tekken 8 character leak right in front of our eyes this whole time. Uncovered by a sharp-eyed gamer on Reddit, it looks like the credits may point to some characters that are planned for Tekken 8 in the near future.
A Reddit user recently shared a screenshot of Tekken 8's PlayStation 5 credits. The game's credits included a section for motion capture actors and support. In this paragraph, we can see Nadaka Yoshinari and Suakim, two fighters who happened to do the motion capture for Fahkumram in Tekken 7.
Fahkumrm was added to the fray in Tekken 7, announced at the Tekken World Tour 2019 as the fifth DLC fighter of Season Pass 3. He is a Muay Thai fighter that's part of the Thai military but wants to regain his freedom. He's tall, imposing, and stoic but seems to be humble and honorable.