Okay, so I've went on a field day building up an entire boss. I had brought up this boss to Robby earlier and he seemed to like the concept. Now, I've built up upon said concept, expanding on the environmental aspect of the idea. See, I've designed Moonchyllus with nature in mind, and as environmentalism is part of the political agendas Eliatopia had, I felt the boss would fit in perfectly.
Here is a concept art for the boss itself.:

As Moonchyllus is meant to be a goddess, I decided to avoid anything remotely puppetlike in order to actually make her look divine. I went the Epic Battle Fantasy route just like Robby did with Burber Boys (a McDonald's parody) and designed Monchyllus off Dawn from Total Drama, as Dawn is already a supernatural being who is, of course, a nature lover. As this is a nature goddess, I made her nude as nudity reflects off Mother Nature.
I made a size comparison between her and a few other Eliatopian mobs and a human player. She would be a tish smaller than a Grunt, which makes sense as gods never rely on size for power (plus smaller foes are smaller targets).
Below the size comparison is a set of attacks. As Dawn, Moonchyllus' inspiration, is an aura reader, I decided to make use of abilities based around aura usage, which of course meant a Dragon Ball Z-ish moveset in part. Her fight would play much like Mecha Sonic in Sonic 3 and Knuckles: she's invulnerable even to homing arrows while in the air, and vulnerable when recharging. This would give players a challenge no matter where they're at, but to allow her to be fast, we would need a dodge roll: a key skill to all action-based RPGs.
I would imagine Moonchyllus having her own separate boss music. You're probably better off commissioning someone, because the best I can find for her in terms of royalty-free boss music is this: https://www.youtube.com/watch?v=DEBPMZ4liEA
Even then, I'm not exactly sure if it fits.
Anyway, since every boss requires set-up, I decided to set things up for the boss. Here's the deal.:

Since Moonchyllus is a goddess, I needed a religion complete with worshippers in order to give her a place in the world. To do this, I made a minimap of a temple for Moonchyllus' worship. The most fitting choice for NPCs in terms of adherents to Moonchyllus' worship were Logons. Most sensibly, I'd name the Logon NPCs after Celtic mythological figures. For example, for the four-armed Great Sage, I shall name him "Great Sage Viridios" after Viridios: god of vegetation, rebirth, and agriculture. There are other nature-based Celtic names for the other logons, as seen here: http://prntscr.com/tsdkp5
Great Sage Viridios would serve as the plot point linking players to Moonchyllus. He would worry about Moonchyllus' aggressive state of mind, which had turned the Logons of Red Leaf Hills into monsters that attack anything on sight. Great Sage Viridios asks you to kill fifty of the aggressive Logons at Red Leaf Hills for a sacrifice that would allow the Great Sage to open a portal to Moonchyllus' inner sanctum. There, you will go through a forest maze that would lead up to Moonchyllus, where a great battle will await.:

As you can tell, I'm not exactly good at making mazes. I knew I had to make a level design for this deal, but still. At the very least I've made an enemy list for the maze which, well... Let's face it, the artwork is in the kinda quality you'd expect from a storyboard rather than anything final.:

I wanted things to be elemental, so I put in Stalagmites for Earth, Cobraquas for Water, Will O' Wisps for Fire, and Ophanim for Air. Yeah, notice how I've made two eldritch abomination angels? Apparently real angels are actually eldritch abominations, NOT beautiful people, as the Book of Ezekiel can attest to. Mhmm. There's even a real Cherub in there, which is a whole mess of crazy. I felt Eldritch Abomination Angels like Ophanim, Cherubim, and Seraphim would fit as mobs in Moonchyllus' domain.
As for the music, I think the song from the Rainforest area in Helmet Heroes would give off the PERFECT divine feel: https://www.youtube.com/watch?v=4scdJZ9mMto
But yeah, there's that.