A large group of demons which takes the name Legion.
About Legion
A legion was a large unit of the Roman army. In New Testament times, the regular size of the legion was 6,000 men. In addition to these men, some 120 cavalry were added.
Because it was a large body of men, the word “legion” came to represent a generally large number. It is used this way four times in the New Testament. In the story about the demon-possessed man in the country of the Gerasenes, Jesus asked the man, “What is your name?” The man replied, “My name is Legion, for we are many” (Mark 5:9, 15; Luke 8:30) Matthew 12:45 and Luke 8:2 speak of a number of demons possessing a single individual.