The Alien Esmeralda (エスメラルダ星人 Esumeraruda Seijin) race are the humanlike inhabitants of Planet Esmeralda.
Alien Esmeralda are humanlike inhabitants that lived on Planet Esmeralda until Kaiser Belial and his forces attack the planet to harvest its minerals. The Royal Guards fought the invaders and was defeated and Legionoids started attacking the city and many Esmeraldans are seen fleeing from Belial and his forces, Mirror Knight protecting them and encase them inside a mirror dome when one of Malebrandes pointers is about to crash them. They stay safe inside the mirror dome and contributed their light and allowing Zero to receive the Shield of Baraji (Ultimate Aegis) from Ultraman Noa. Peace returned to them and their planet after Zero's destroyed Arch Belial with his Final Ultimate Zero.
- Mirror Knight is half Esmeraldian as his mother was a member of this race.
- Alien Esmeralda is inspired by Alien Emerald from the showa 1973, Jumborg Ace.
|Ultraman Zero Kaiju & Seijin|
|Ultraman Zero The Movie: Super Deciding Fight! The Belial Galactic Empire||Alien Esmeralda Emerana Lourdes | Iaron | Darkgone | Legionoids | Delusts | Brigantes | Two-Dimensional People | Darklops | Malebrandes | Arch Belial|
|Ultraman Zero Gaiden: Killer the Beatstar||Beatstar | Rei's Gomora | Ace Killer | Inpelaizer | King Joe | Rei's Litra | Alien Bat|
|Ultraman Saga||Hyper Zetton | Alien Bat | Sphire | Gubila | Gomess (S) | Astron | Legionoids | Chaos Header 0 | Lidorias | Bolgils | Mogrudon | Golmede | Mienin | Eligal|
|Ultra Zero Fight||Bemular | Telesdon | Gudon | Sadola | Gurashie | Red King | Galberos | Gan Q | Bemstar | Pigmon | Surai | Villainous of the Villainy | Jathar of Hell | Deathrog | Glocken | Silvergon | Fanegeon People | Tyrant | Armored Darkness | Kaiser Darkness|