Alfred should look familiar to Harry Potter fans, as he appeared in seven of the eight films.
"I'm really enjoying myself," Alfred said of the ABC show, which attracted more than 14 million viewers for the show's series premiere last week.
Another familiar face belongs to co-star Matt McGorry, who appeared on Orange is the New Black as John Bennett, a prison guard who has an affair with a female inmate. On How to Get Away with Murder, he plays eager overachiever Asher Millstone.
Aja Naomi King portrays Michaela Pratt, and working for executive producer Shonda Rhimes is a dream come true, she said. "I've been a huge fan of Grey's Anatomy and Scandal since the very beginning," she told ET, "so the fact that they put all these shows together on one night ... You're welcome, America."
How to Get Away with Murder airs Thursday nights at 10/9c on ABC.