First revealed at Hasbro PulseCon 2020, War for Cybertron: Kingdom is a toyline in celebration of the 25th anniversary of Beast Wars and the 35th anniversary of The Transformers: The Movie. A first for any toyline, this subline is generally split between "Generation 1" characters and those from Beast Wars. As a direct continuation of Siege and Earthrise, Kingdom carries over the C.O.M.B.A.T. System, meaning most toys feature 3 mm and 5 mm posts to accommodate the weapons and the effect parts from War for Cybertron Trilogy and other toylines. Due to the realistic animal modes, Beast Wars characters only employ the C.O.M.B.A.T. System in robot mode. Much like its predecessor, Kingdom has rereleases of toys from the previous subline, Earthrise.
This toyline sees the addition of the "Core Class", a return to the Legends Class from the Prime Wars Trilogy, replacing the Micromasters and Battle Masters of previous lines. Kingdom also features the "Fossilizers", new skeletal characters amongst the Deluxe Class, replacing the Weaponizers and Modulators. As part of the "F.O.S.S.I.L. Technology" (Fossilized Osteo-Skeletal Shield Integration Loadout), they can be taken apart to form armor or weapons compatible with the C.O.M.B.A.T. System. Unlike the previous toylines, the battle damage decoes are completely absent, and the robot mode scale falters due to the larger size of the Beast Wars characters and the smaller size of Generation 1 characters in the Core Class.
Not too dissimilar to Power of the Primes, all figures from Deluxe Class upwards include Golden Disk cards with a peelable foil sheet, revealing one of three different variants, each revealing a different destiny for the character.
