Vuice you forgot it’s football games
Nobody likes baseball you brainlet

Also, I’m glad you’re somewhat invested in my series. I’ve been hard at work with this for a while now.

Well first of all, Valkyries live off of sunlight. It’s what gives them energy and is also what fuels their wings. They need constant sunlight to beat on their wings to fly, otherwise they may only glide.
Lucky and Emily just came out of the Cinder Wastelands, a place with no sun. They’re trying to conserve their sun energy towards their bodies being fed rather than flying. Also, flying makes quite a bit of noise and would easily attract Kijolers, which can extend extremely high into the sky.

I’ll consider it, but it must fit into the lore extremely well. Right now my focuses are more on plotline for the story and backgrounds for the animation.

This series is it’s own new creation that doesn’t relate to any real life mythology or religion, though it does take heavy inspiration from Norse mythology like you pointed out with the Valkyries.
I names them Valkyries because… well it sounds cool, and because I also love Norse mythology. Season 1 will explore this norse design more than the next season.

Tl;Dr
No because it isn’t Norse mythology, just inspired from it. That being said, since it’s inspired from it, I will include creatures that could have a norse feel to them though.

You can go ahead and remake my mask if you want to.

Name: Mask of Nyseth (Unofficially called Lucky’s mask lol)
Source: A wedding gift to King Nyseth from the Valkyrie Goddess, Tyxe.
Important info: It is used to calm ones mind or otherwise block out harmful thoughts during battle, greatly increases focus in tough situations.
Picture: https://media.discordapp.net/attachments/801553369117491201/972668447626514442/masqu_0000.png
Included multiple sides just incase you needed them for reference.