Mike Waddell changed his signature at least thrice since the inception of MetaZoo Games.
It started off back in mid-2020 as the following:
Then in June 2021, it was changed to the following:
Then in February 2022, it was changed to the following:
The clockwise spiral in Mike's first Choku Rei signature (seen above) indicates energy flow is spirit-to-matter.
Then on July 29, 2022, it was changed to the following:
The counter-clockwise spiral in Mike's latest Choku Rei signature (seen above) indicates energy flow is matter-to-spirit.