Umbra

Umbra, known in Japan as Toke Bisu, is an optional boss fought at the 2,000-meter point of the Glissini Caves on Nova in Magical Starsign.

Profile
Umbra is identical in appearance to Shadra's first form, but with a slightly muted color scheme.

Boss
Umbra's affinity will be the opposite of the protagonist's affinity, giving them either the light starsign with an aura during the day, or the dark starsign with an aura during the night. With light affinity, Umbra can perform crystal laser and prism barrier. Additionally, despite being tied to a single affinity, Umbra can use magic attacks from every other affinity. These are: falcon dive from wind; gravel pounder from earth; briar patch from wood; heat fondu from fire; and absolute zero from water. They also possess the neutral spell celestial swap, allowing them to control the alignment of the planets to their advantage; Umbra will use this spell more variably than most other enemies, and is capable of aligning the planets to deal massive damage to the party. They can also use the skill scale, which does very little damage to the party, but has the potential to completely drain the magic points of its targets. After being defeated, a chest containing the game's final putty pea will appear in the enemy's place.

Bestiary entry
Shadra, grown to massive dimensions after devouring powerful millennium gummies, has shed its old husk and risen in this new and awe-inspiring body.

Trivia

 * Their Japanese name, Toke Bisu, is an anagram of the phonetic spelling for 'biscuit'.