Yes, Howard the Duck Is in Avengers: Endgame and This Is How It Happened - Fri 17 May 2019 04:51:PM
Avengers: Endgame features a very brief Howard the Duck cameo during the epic battle scene.
Source: Yes, Howard the Duck Is in Avengers: Endgame and This Is How It Happened
Source: Yes, Howard the Duck Is in Avengers: Endgame and This Is How It Happened