The Punisher, played by Jon Bernthal, may return in "Avengers: Secret Wars." This was reported by user BlueMinutes, whose information was later supported by well-known insider MyTimeToShineHello:
"Yes, that's right. The Punisher will return in 'Avengers: Secret Wars'."
According to sources, Frank Castle will act alongside Spider-Man, the Defenders, and Jean Grey. How the street vigilante will become involved in the multiversal conflict with Doctor Doom is currently unknown. However, some answers may be provided by the alleged plot of "Avengers: Doctor Doom," which recently leaked online, if this leak proves to be accurate.
Marvel Studios has not confirmed the participation of Jon Bernthal and the other mentioned characters. Even Tom Holland's return as Peter Parker in the next "Avengers" has not yet been officially announced, so this information should be taken purely as a rumor.