
Gespeneris is the third boss of Caladrius, piloted by Milia Marivene.
Profile
The most repulsive and powerful weapon out of all created with the forbidden spell.
Despite the dark and horrendous appearance, it attacks very considerably.
The ship appearance shows traces of Milia, who was supposed to disappear along with other citizens because of the forbidden spell. So Milia's body, empty of consciousness was forced to fuse with the ship.
Following the King's orders, the weapon is to kill all who approach, but having no desire to fight, he has hidden himself in an old tower.
Details

The fight open with the boss sending its arms at you, which fire different spreads of bullets. As the arms move around, the spreads change direction, and they can even come together to create fiery spreads, before a scythe blade pokes holes in the world, sending faster bullets at the player.
The second phase features the boss' headless torso with flaming crystals drawing a pentagram using bullets. It will then summon its scythe for some heavy fire. It can also summon souls and shoot them as they track the player. The ether chip can be found inside the scythe during this phase.
The last phase open with some RNG mines, which will do a suicide spread if left alone. Whether or not the player can destroy all of them depends on character and element setup. Once the assembled boss comes down, it'll fire ice shards from the upper-right corner while dropping large ice shards from the top of the screen. Then it sends rotating homing scythes at the player. After that it summons large scythes to launch some bullets on the right side of the screen while it stays on the left. Then it does the ice shard attack from the upper-left corner.
- Note: The spinning scythe can still kill the player on both No Damage mode and Practice difficulty.