| Name | Type | Lv1 Locations | Lv2 Locations | Lv3 Locations | Summon MP | Seru HP by level | Seru MP by level |
|---|---|---|---|---|---|---|---|
| Gilium |  |
<Jette's Absolute Fortress> | Seru-kai | Bio Castle | 160 | 2880, 3280, 3542 | 250, 400, 550 |
The Gilium is the last "new" Seru you will encounter, as well as the hardest of Seru to capture. Even with the Ivory Book, it can take a long time to capture the Gilium, so you have to depend on both the book and luck.
Gilium is more like a machine than anything, and if it weren't a Seru, you could imagine it as being a cyborg that helps Jette and Cort inside the Fortress. Gilium has a special move called Thunder Storm, which it uses quite often (especially at level 3). It's not a very powerful attack, like you would expect. Using Spirit, it should take no more than 200HP per party member.
When using Gilium through the Ra-Seru (if you manage to capture it), it uses the move called Space Cannon.