Legion is a pig that needs to be driven into the sea.
Mark 5:9New American Bible (Revised Edition) (NABRE)
9 He asked him, “What is your name?” He replied, “Legion is my name. There are many of us.”
5:9 Legion is my name: the demons were numerous and the condition of the possessed man was extremely serious; cf. Mt 12:45.
Matthew 12:45 New American Bible (Revised Edition) (NABRE)
45 Then it goes and brings back with itself seven other spirits more evil than itself, and they move in and dwell there; and the last condition of that person is worse than the first. Thus it will be with this evil generation.”
The True Family of Jesus.[a]
12:46–50 See Mk 3:31–35. Matthew has omitted Mk 3:20–21 which is taken up in Mk 3:31 (see note on Mt 12:22–32), yet the point of the story is the same in both gospels: natural kinship with Jesus counts for nothing; only one who does the will of his heavenly Father belongs to his true family.