A Synchro Substitute Monster is a monster with an effect that allows it to replace a single Synchro Material Monster that must have a specific name or be of a specific archetype for the Synchro Summon of a Synchro Monster. Unlike a Fusion Substitute Monster, the other Synchro Material Monster(s) do not have to be the correct one(s), but there isn't a situation where this would be applicable.
|Synchro Material for|
|Junk Anchor||Chevalier de Fleur|
|Quickdraw Synchron||Chevalier de Fleur|
|Quickdraw Synchron (anime)||Fleur de Chevalier (anime)|
Drill Warrior (anime)
Junk Archer (anime)
Junk Berserker (anime)
Junk Destroyer (anime)
Junk Gardna (anime)
Junk Warrior (anime)
Nitro Warrior (anime)
Turbo Warrior (anime)
|Vanadis of the Nordic Ascendant||Loki, Lord of the Aesir|
Odin, Father of the Aesir
Thor, Lord of the Aesir
Treated as alternate name
Some cards can replace Synchro Material Monsters by treating their name as that of a Synchro Material Monster.
For example, "Pain Painter's" name is treated as "Plaguespreader Zombie" while it is face-up on the field. It can be used as the Tuner monster in the Synchro Summon of monsters such as "Archfiend Zombie Skull" that require specific Tuner monsters.