Guardian Lumi

Guardian Lumi specializes in light-based attacks.

Move List

Lumi only has one special attack. When he initiates this attack, he'll stand in place and glow brightly before making the screen flash white. If you're facing him, you will be stunned immediately, even if you are in invincibility frames. After the screen flashes, the party will be attacked by lightning bolts which strike where you were when the screen flashes. The only way to avoid this attack is to face the other direction (away from Lumi). The lightning bolts can cause electrocution at a very high rate.
Lumi can summon clones of himself as you wear down his health. He'll summmon one clone at first, then a pair, and finally a trio, for a total of six Lumi clones. These are slightly smaller in size and do not have the "Light Guard" title above their heads.

The danger here is that all six of his clones can perform the same Light Flash attack. The clones each have their own A.I. and will use Light Flash at completely random moments. It's important to keep all the guardians facing in one direction so you can avoid the Light Flashes. Being sandwiched by the guardians almost guarantees death if they flash in both directions simultaneously, and you will be hit by several lightning bolts at once, which will generally kill you in a matter of seconds.
The party can choose to take it slow and weaken Lumi bit by bit and taking out his clones as they spawn, or attack Lumi aggressively and kill him quickly, then killing all his clones together before they cause too much trouble. If you have many summons or allied monsters on your side, the lightning bolts will still target the party, so be ready to dodge.
Lumi is highly resistant to light damage, but extremely weak against shadow damage.