Current ROH star Silas Young runs the Wisconsin based MKE Wrestling promotion shared footage of the run in on his Twitter with the following caption.
Last night we held @MKE_Wrestling at the Knights of Columbus building in west allis the place was packed with 350 people. This place has had 25+ years of wrestling and is the place a lot of guys started. Guys like @ColtCabana as well as a Punk who showed up in a mask last night
Robbie Fox of Barstool Sports stated that this isn’t the first time Punk has dawned a mask and appeared at independent shows. Footage of a prior appearance was filmed for Wrestling Road Diaries 3, but was cut to the falling out between CM Punk and Colt Cabana.
It doesn't happen on a regular basis, but it's happened like 3 or 4 times since 2015, I believe. Some of it was filmed for Wrestling Road Diaries 3 but I believe Colt/Punk had their fallout before that was released and it got cut.
Here is the picture comparison for CM Punk and the masked person. This would really be something. I do not know who made this picture, so I do apologize for not being able to attribute, had it sent to me. pic.twitter.com/NtS2XC5HbU
Punk stated in an ESPN interview with Russillo & Kanell in 2016 if he ever returns to the squared circle it would be non-televised, and nobody would ever know it was him.
“WWE? No. Absolutely not. But you never know, I could pop up here and there. Let me explain that to you even better… it’s not going to even be televised, it’s going to be me in a ninja f–king outfit wrestling one of my buddies and nobody’s ever going to know. It’s going to be very ‘Monty Python’ so to speak.”
CM Punk 3 years ago on a potential return to wrestling: "Its not going to be anything televised, it’s gonna be me in a ninja f*cking outfit, wrestling one of my buddies"