Xtra HERO (X・HERO(エクストラヒーロー), Ekusutora Hīrō) is a sub-series of the "HERO" archetype that is comprised completely of Link Monsters. It is the first, and currently only, sub-group of the "HERO" archetype that has not been used by any character in any of the anime or manga, and is the first "HERO" theme to be introduced since the Yu-Gi-Oh! GX era (excluding the illegal "E☆HERO" monster and "Contrast HERO").
Xtra HERO, Yu-Gi-Oh! Wiki
Xtra HERO, Yu-Gi-Oh! Wiki
Mask Change II - Yugipedia - Yu-Gi-Oh! wiki
Ninja - Yugipedia - Yu-Gi-Oh! wiki
Super Roboyarou - Yugipedia - Yu-Gi-Oh! wiki
Duelist Saga, Yu-Gi-Oh! Wiki
Xtra HERO, Yu-Gi-Oh! Wiki
Elemental HERO Ice Edge - Yugipedia - Yu-Gi-Oh! wiki
HERO Strike Structure Deck, Yu-Gi-Oh! Wiki
Xtra HERO - Yugipedia - Yu-Gi-Oh! wiki
Yu-Gi-Oh! Wiki - Xtra HERO Infernal Devicer
Wing Requital - Yugipedia - Yu-Gi-Oh! wiki in 2023
Elemental HERO Divine Neos - Yugipedia - Yu-Gi-Oh! wiki