Mech Spirit (精械 Seikai) is a class, and one of the ten "superclasses" that other classes are classified under. Classes under this type represent manmade objects, including buildings, machines, technology, and food.
List of Mech Spirit classes
Support
ARTS
SIGNI
| SIGNI Classes | |
|---|---|
| Idol Spirit Idol Tone |
Angel ● Beauty ● Brave ● Demon ● Pripara ● Wisdom |
| Living Spirit Living Tone |
Aerial Beast ● Aquatic Beast ● Dragon ● Insect ● Outcast ● Terra Beast |
| Mech Spirit Mech Tone |
Cooking ● Denonbu ● Electronics ● Labyrinth ● Legacy ● Selene Girls' Academy ● Vehicle ● Vermilion ● Virtual |
| Nature Spirit Nature Tone |
Atom ● Bacteria ● Cosmos ● Jewel ● Ore ● Plant |
| War Spirit War Tone |
Amuser ● Armed ● Blue Archive ● Venom ● Trickster ● Weapon |
| Primal Spirit Primal Tone |
Primal Spirit ● Primal Tone |
| Factions |   Defense Faction ●  Liberation Faction ●   Struggle Faction
|