http://wiki.spiralknights.com/File:Monster-Toxilargo.png
I belive Toxilargo should be a proper boss, mini or no.
Buff him and give him tokens. Even make his tokens special since the lichen is only accessable via crystal munlipluation, some ol' Sleestak gig.
Any other links the community has on this for suggestions would be apperciated.
I saw it before. That little Dinosaur symbol on a depth means miniboss.
After a wave or two of Zombies and poison lichens, there'll be a Toxilargo with a few zombies.
It exists, just not all the time.