Pony POV Series Lore, elements of chaos and Grogar

In the Pony POV Series universe,

https://tvtropes.org/pmwiki/article_history.php?article=FanFic.PonyPOVSeries

It should be noted that just as the Elements of Harmony are capable of turning into suits of barding that are custom to each bearer, each Element of Chaos can become a weapon for the Element of Chaos... this obviously didn't happen to the Mane Six in Dark World since the Elements were contaminated versions of the Elements of Harmony and were being used as their soul-jars. Each weapon would suit the personality of the wielder, Trixie's possibly resembling a scepter-like mace, and Gilda's being either a double sided axe or war hammer.

And an import note about Trixie, in the final battle of the fanfic, her horn did not burn out due to all the magic she channeled, but due to her channeling several Elements of HARMONY through her Element of Chaos. While she was doing it for a good cause, she was still focusing magic that was contrary to her very being and was damaging her.

In the Pony POV Verse, the final enemy the mane six would likely end up facing would be the REAL Grogar, Tambelon, and his army, all vastly upgraded over the centuries by the Gizmonk tribe.

This would include a set of Elements created in opposition to both Harmony and Chaos, that would form an armed suit of armor. Tambelon's Elements could be able to given to anyone if the currently wielder is killed, and if destroyed, Grogar could just create a new set. Hammering home the impersonal and man-made nature of them. Less about strength through enlightenment, and more through simply wielding magic and spirituality as a weapon of war.

And I imagine at first, they could possibly be sent out one by one, the mane six thinking they're knocking them off like video game bosses... when they were willing Kamikaze opponents who weren't sent to kill the heroes, but gather combat data with their apparent mission being secondary.
And Grogar even lampshading the absurdity in most video games that use a quirky mini-boss squad, and instead of acting as a squad, are defeated one by one and never actually working together.

Thus catching the mane six off guard when all six Tambleon elements attack AS A GROUP, being far more competent than the first one and able to use their elements beyond quirky gimmicks that the heroes just needed to figure a work around for.

The villains would be searching for Grogar's bell, having been stolen in a previous invasion, but the heroes wouldn't realize they were helping Grogar beta-test his weapons. (Similar to Super Mario RPG, where it turns out the bosses you defeat throughout the games are just prototypes, and are now being churned out in endless numbers.) The only limit being Grogar can ONLY create six elements of chaos at a time, but doesn't need to wait around for all six to be destroyed to make a replacement. The heroes would have no clue of this and wouldn't hesitate to destroy the Tambelon elements they encounter. Unlike in some fanfics where the heroes Batmanning jump to the correct conclusion with sub-minimal evidence.