- Web Weaving: Arachnia can weave indestructible webs.
- Embryonic Sac: Female members of Arachnia's species reproduce by laying eggs and creating an embryonic sac. The sac forms a symbiotic relationship with its host, bonding to their nervous system. If Arachnia is weakened, the sac will latch on to a new host, and cannot be removed until the eggs hatch. While attached, the host is temporarily granted powers such as super strength, super agility, and enhanced senses and coordination.