A vegetarian vampire? One will introduce himself during the premiere of Interview With the Vampire on AMC Oct. 2, as well as on Fandom, Instagram, Reddit, TikTok, Twitch, Twitter and YouTube. Heinz teamed up with “280 year-old vegetarian vampire, influencer and Tomato Blood activist” Toby, portrayed by viral TikTok star E.J. Marcus, on a “public-service-announcement…