"Let me tell you one thing. The client that asked me to create that invasion device is a human."
- ―Alien Makindo's words before his death
Subtitle: Space Merchant (宇宙商人 Uchū Shōnin)
A business man by trade, Alien Markind was contacted by his client to build an invasion device so an alien species could take over the Earth. Disguises himself as an employee for a company named Tamaru, he employed who ever he could to help build the massive device. He turned his sights on the hopeless, a group of homeless people living in the park, who like society had given up on themselves due to their laziness. They were divided into groups, the manual labor and those who used their minds to help ready the device. However a side effect of the mental work, as effortless as it seemed was that it caused the human brain to shrink.
One such body was discovered in the park, Jin and R were dispatched to investigate, upon some searching and interrogation, Jin remembered his encounter with Tamaru who was apparently involved. The two arranged a meeting as men looking for work. When they found their operation they tried to arrest the alien and halt the construction but to their shock the hopeless didn't care. While R went about halting the construction however he could Jin chased after Tamaru confronting him in a hallway.
Jin demanded answers but Tamaru attempted to simply scare him away by revealing his true form. When he saw Jin take out his Ultra Eyes, he realized he was the red giant and challenged Jin's logic on the basis that if he was to be judged then so to should the humans as they willingly give their energy to the creation of an invasion device in full knowledge. Uncertain but undeterred, Jin transformed and the two flew to an open battle ground where they did battle.
Jin trounced Tamaru and with his Eye Slugger destroyed him, but before his death he revealed to Jin that his client was in fact human. With Alien Markind gone the project was halted and the hopeless were simply released back onto the streets, while Jin's faith in humanity was left shaken.
- Suit Actor: Soma Aiya
- Markind's human form actor and voice actor previously appeared in Ultraman Gaia as a guest star.
- Markind's name is a combination of the English word Merchant and Akindo (あきんど Akindo), the word for "merchant" in Kansai dialect.
- While Markind states that he is hired by human to build an invasion device, in reality, it is possible that he was mistaken and that human is theorized to be an alien in disguise.
- Markind seem to have two pairs of eyes, that is, if the glowing orbs on their faces are their eyes; one pair in front and the other behind their head.
Alien Markind (not mentioned by name) was a customer of Alien Nackle Bandero, whom the latter called as "big guy". He was the one whom hired Bandero to steal the Sparks Dolls from Xio and the thief later wanted his payment in the form of his planet's currency. However, he soon loses his bargain when Rui, later Ultraman Zero and Ultraman X had participated in Bandero's demise.
- Voice actor: Holly Kaneko
- His appearance in Ultraman X is interesting, since the Markind race first appeared in Ultraseven X, another show with the "X" logo.
- After the end of episode 14 of Ultraman X, Koichi Sakamoto revealed that Alien Nackle Bandero's customer in episode 5, who requested his stolen Spark Dolls was none other than Alien Markind. 
- Main article: Markind
Alien Markind served as the host of a monster auction for the Villain Guild as he displayed the power of Zegun live and made the aliens bid. The Markind also hosted the auction for Guesra, though it failed after it managed to be calmed down by Hiroyuki Kudo, making the bidders withdraw. The auction was completely cancelled when Ultraman Tregear arrived.
- Height: 1.7 ~ 1.9 m, 1.8 m (Taiga)
- Weight: 70 ~ 100 kg, 85 kg (Taiga)
- Origin: Planet Markind
- Powers and Weapons
- Flight: Markind can fly under his own power, despite having wings, he doesn't seem to use them for flight.
- Energy Blast: Alien Markind can fire energy blasts from his hands.
- Eye Beam: Alien Markind can fire laser beams from his eyes.
- Human Disguise: When needed Alien Markind can take on a human form.
- Ultraman X
- Spark Doll Detectors: Alien Markind had a Spark Doll detector which appeared as a white Fabergé egg. This was among the two items sold to the Gua Army.
- Spark Doll: It is possible that Markind had a collection of Spark Dolls, with one of them, Mecha Gomora was purchased to the Gua Army.