Complex sentence: He is also known for his popular portrayal of the dwarf Gimli in "The Lord of the Rings" trilogy.Whereas his character was supposed to be short, he was properly in proportion compared to the hobbit actors.
Split into simpler sentences: He is also known for his popular portrayal of the dwarf Gimli in "The Lord of the Rings" trilogy. Therefore, whereas his character was supposed to be short, he was properly in proportion compared to the hobbit actors.