What are those custom pieces

So I build variations, but when I see other variants, they use pieces I have never seen.  How do you find them?  I know it's not custom since I've seen the same pieces between variants.

You can read https://www.chess.com/clubs/forum/view/the-fairy-pieces-introduction

Oh, I thought BN would say "use standard piece style".

uh and that too yeah

Standard theme is, practically speaking, the best theme

bn is that a gnik on ur profile thumbnail? (a gnik is a anti king)

(try reversing gnik)

No it’s just a regular king lol

The pieces should be in the piece bank when you go into the editor. Try scrolling down if you don't see them.

No, Neo looks better.

It's a you problem and skill issue if you can't memorize the fairy pieces of Neo.

For all beginners out there, use Standard theme. If you use Neo theme you will be struggling to figure out which piece is which. 

Otherwise, you do you.