I saw this in the LEGO Brawls Announcement Trailer, it might be the Samurai X Mech coming in the Summer 2022 sets, it would make sense since this game comes out in
LEGO Ninjago Summer 2022 Sets Partially Revealed - The Brick Fan
LEGO Ninjago Summer 2022 sets revealed [News] - The Brothers Brick | The Brothers Brick