Haha, that's funny 'cause 92% was my first-time scan percent.

Eh, I'll just give the answer and pose another one.

As Kishly said :

Vigilance Class Turret : Central Mining Station - Agon Wastes
- There are lots in the game, but you can only scan them while they're being used by Space Pirates in this section.
Ing Webtrap : Battleground - Dark Agon Wastes
- This appears over the door when you're fighting the Warrior Ing for the Temple Key, and disappears upon it's defeat.
Chykklings : After the Larval stage of the Chykka fight
Dark Shredder : During the Larval stage of the Chykka fight

Then the one missed :

Lightbringer : Dueling Range - Dark Agon Wastes
- They appear creating little Safe Zones as they move first time you enter the room, but are gone once you leave it.


Err yeah, I miscounted when I said three more, I thought Weblings only appeared once in the game, but they appear twice, and I thought the Growler Class turret you find in the Temple Grounds disappears when you leave the room, but it's possible to just leave and come back and get it, just it goes forever after you blow it up.

Anyway, uhh...

Name all the MINOR bosses in Super Metroid, not Major ones.