Answer
The answer is the X-Men film series, specifically the trilogy consisting of X-Men (2000), X2 (2003), and X-Men: The Last Stand (2006). In these films, Kelsey Grammer portrays Dr. Hank McCoy, also known by the alias Beast, a brilliant geneticist and member of the X-Men superhero team. Beast possesses superhuman strength, agility, and enhanced intellect, along with distinct blue fur and feline-like features.