Scylla and Charybdis are a spear and shield pair.
Scylla is a Mechanized spear and gattling gun.
Charybdis is a supporting shield.
Scylla and Charybdis are a pair of mythological monsters from Homer's Odyssey. Scylla is a creature with multiple heads which always ate a set number of sailors when possible. This is referenced by the spears ability to attack more then one opponent. Charybdis is a whirl pool. This is referenced by the shield being pretty round.