There is probably nothing that Alma would have rather done at this trying time than to show the wicked exactly how pitiful and dreadful they would look suffering in their personal lake of fire and brimstone. Yet, Alma was able to show remarkable constraint, keeping the attitude, let God judge between me and thee, and reward thee according to thy deeds (DC 64:11).
Heber C. Kimball got a look at what the spirits of the damned look like. He was attacked by evil spirits and later gave a vivid description of their appearance:
“I was struck with great force by some invisible power, and fell senseless to the floor. The first thing I recollected was being supported by Elders Hyde and Richards, who were praying for me…Elders Hyde and Richards then assisted me to get on the bed…when a vision was opened to our minds, and we could distinctly see the evil spirits, who foamed and gnashed their teeth at us. We gazed upon them about an hour and a half (by Willard’s watch). We were not looking towards the window, but towards the wall. Space appeared before us, and we saw the devils coming in legions, with their leaders, who came within a few feet of us. They came towards us like armies rushing to battle. They appeared to be men of full stature, possessing every form and feature of men in the flesh who are angry and desperate; and I shall never forget the vindictive malignity depicted on their countenances as they looked me in the eye…We distinctly heard those spirits talk and express their wrath and hellish designs against us. However, the Lord delivered us from them, and blessed us exceedingly that day” (Smith and Sjodahl, D & C Commentary, p. 514)