This is a mug shaped like Tyrion Lannister, a dwarf character from the Game of Thrones book series and television series adaptation by HBO.

Lord Tyrion Lannister is the youngest child of Lord Tywin Lannister and younger brother of Cersei and Jaime Lannister. A dwarf, he uses his wit and intellect to overcome the prejudice he faces. He is known as a heavy drinker and frequenter of whorehouses, but he is also a brilliant strategist and proves a cunning ally to Daenerys and other characters in the series.