As  the news of the death of Alan Rickman circulates, fans  of the British actor's most famous role – that of Professor Severus Snape in the "Harry Potter" series – are speaking out on social media remembering the villian/hero.

Rickman gained big-screen fame first in the role as the villain Hans Gruber in "Die Hard." Rickman was a gifted actor, as well known for his work in the theater as he was for such movie roles as the sheriff of Nottingham in "Robin Hood: Prince of Thieves," an unfaithful husband in "Love, Actually," and as the terrifying puppet master to royalty in "Rasputin."

Rickman, who was 69, died in London Thursday.

Here is what fans are saying about the star:

From co-star Emma Watson: