This Lord Voldemort figure is released by Funko in their POP! x Harry Potter vinyl figure series.
Funko POP! is a crossover vinyl figure series by Funko and other famous franchises such as Disney, Pixar, DC Comics, Marvel Comics, Star Wars, Simpsons, South Park, Uglydoll, etc. Each POP! figure is about ~3" to ~5" tall and crafted in a Japanese anime/manga super-deformed style (NOTE: due to the unique design of each character, the actual size of the figures may be smaller or bigger than stated).
The Funk POP! x Harry Potter series features characters from the film series based on novels written by J. K. Rowling, which chronicles the adventures of a young wizard, Harry Potter, and his friends, Ronald Weasley and Hermione.