Alan Rickman, who portrayed the enigmatic Professor Severus Snape, captured hearts with his complex portrayal. He was 55 when he first appeared in the role in 2001 and sadly passed away at 69 on January 14, 2016, after a battle with pancreatic cancer. Robbie Coltrane, known for his warm-hearted portrayal of Hagrid, passed away on October 14, 2022, at 72 due to multiple organ failure, leaving an indelible mark on the series.