From Bandai's "Movie Monster Series" brand of figures, it's Millennium Godzilla! Stands approximately 16 cm tall (about 6.3 inches). Please note that this figure has very limited articulation but makes a great display piece!
Japanese "Movie Monster Series" figures are packaged by the manufacturer in a polybag only (i.e. no box) with tags and hanger tab for retail display. These are great inexpensive fun, but please understand that this style of product may have small imperfections such as very minor paint defects or slightly bent pieces from the lack of protective packaging. If you are looking for absolute perfection, please be willing to do some touch-up work on your own.