Answer: connecting to the supernatural.
Step-by-step explanation:
Based on the information in the excerpt, the characteristic of an epic hero that's revealed by the excerpt is the connection to the supernatural.
From the excerpt, when Gilgamesh heard Humbaba's terrifying roar, he stopped and was trembling. He then cried and called on the god Shamash, to protect him on the dangerous journey and help him.
The voice of the god then called him from heaven to attack Humbaba while the time is right. This shows that there's a connection to the supernatural.