ALF #20 was published by Marvel Comics on October 1, 1989, as part of a series that began in 1988. Michael Gallagher writes, and art comes from Dante Alighieri, Dave Manak and Marie Severin. This 36-page issue features ALF, Willie Tanner, Brian Tanner, Kate Tanner and Lynn Tanner, among 7 characters cataloged on VerseDB.