List characteristics the author gives about Ivan.

From the text:

The first thing Rainsford's eyes discerned was the largest man Rainsford had ever seen--a gigantic creature, solidly made and black bearded to the waist. In his hand the man held a long-barreled revolver, and he was pointing it straight at Rainsford's heart.

Out of the snarl of beard two small eyes regarded Rainsford.

He was dressed in uniform--a black uniform trimmed with gray astrakhan.

"Ivan is an incredibly strong fellow," remarked the general, "but he has the misfortune to be deaf and dumb. A simple fellow, but, I'm afraid, like all his race, a bit of a savage."

He is a Cossack," said the general, and his smile showed red lips and pointed teeth. "So am I."