Could this possibly lead into the thought that Haggar once piloted the Castleship if anything?

Okay but like. wait a minute here because the same episode that first demonstrated Zarkon’s ability to mess with the Black Lion…

Haggar tampered with the Castle.

When Allura and Coran were stuck in the wormhole, Allura specifically mentioned that the Castle wasn’t responding to her- the system was locked and it wouldn’t accept another endpoint, in a way that Allura suggests isn’t normal.

Also Sendak and Haxus somehow knew how to mess with the Castle’s systems and came prepared with that purple crystal. How would they know how to mess up the Altean Castle if nothing else because the galra seemingly hadn’t been to Arus (there’s no way Zarkon wouldn’t have taken the opportunity to secure the area if he knew that was where the Castle was)

And Haggar also just knew when the Blue Lion returned, which, if I’m ruling out the possibility she was the former Blue Paladin because she doesn’t fit the bio and didn’t take her bayard with her- what did Blue do when she returned? She activated the Castle.

The Castle, which they probably couldn’t track because it doesn’t really “bond” with a pilot quite the way the Lions do as much as only a handful of people can activate everything it’s capable of in the first place, when there’s quite a few implications that Allura and Haggar most likely be branches off the same family tree- or somehow, both, the same royal bloodline.

And Coran said the Castle was built by his grandfather, but suggests he was a child at the time- so the Castle would’ve been built long before Allura’s time. Meaning there had to have been another pilot before Allura.

Alfor was a paladin- so he sure wouldn’t have been steering the castle while Voltron was out and in action. But considering the Castle is basically a fully combat-capable airship carrier for the Lions, during whatever ancient conflict Alfor and Zarkon fought together before their falling out, one Shiro caught glimpses of… someone had to have been flying the Castle. Someone capable of using the wormholes- so, not Coran, though he might’ve been helmsman at that time, as well.

In Ark of Taujeer, Zarkon focuses on the Black Lion, his former vehicle, but as I’ve mentioned before, Haggar at the same time focuses on the castle.

…Haggar also primarily chips in by firing attacks from within Zarkon’s flagship, from a central altar within the ship. A strategy that would work perfectly if she was used to fighting by Zarkon’s side but from within the ship.

And come to think of it- Allura just realized Haggar’s Altean. We haven’t seen Coran react to this information. We’ve also never seen Haggar react to Coran, or even, seemingly, note there’s an Altean besides Allura alive and out there- the closest they’d come is when Coran attacks the fleet alone after Allura was captured in the s1 finale.

If Coran was the helmsman of the castle back then, too- Allura might be the second pilot he’s done this for.

(Coran, who specifically has an alarmed reaction to the room full of quintessence Keith finds an episode earlier, and the druid refining it- when the implication stands that Haggar taught the druids what they know.)

So…. holy crap, Grapes.