|Home world:||Planet 61|
|First appearance:||Return of Ultraman episode 45 "Assasinate Hideki Go!" (1972)|
|Affiliation:||Alien Messie (Controller)|
Alien Cygnus-61 (白鳥座61番星人 Shiratori za 61-ban Seijin) are aliens from Cygnus-61 who appeared in the TV series, Return of Ultraman. One of them, Erika Shiratori (白鳥エリカ Shiratori Erika) was kidnapped by one of the Messie people. She appeared in episode 45.
- Height: 1.52 m
- Weight: 42 kg
- Origin: Planet Cygnus-61
Alien Cygnus-61 was orginally a peaceful alien who was kidnapped by Alien Messie to do his bidding. She is first seen watching over the fight with Robonez and Ultraman Jack. After his defeat, the alien then blew up a plane by sneaking in a bomb in the shape of a pen,this was the plane that Goh originally booked. She then takes the name of Erika Shiratori and makes friends with some of the kids at school (with some the kids liking her a lot). She then gave it to Jiro, who brought it to Hideki Goh. She was soon found and her control band was shot off. Out of Messie's control temporaly she told a MAT Doctor that Alien Messie killed her dad and forcefully controlled. However her and a MAT doctor where controlled. They then ambushed Hideki Go before Alien Messie grew big. After the aliens defeated, both are freed from the aliens control and she then returns back to her planet, thanking everyone for their kindness.
- Alien Cygnus-61 is one of the few aliens to not have a subtitle, possibly because her intentions were not malicious.
|Return of Ultraman Kaiju & Seijin|
|Takkong | Zazahn | Arstron | Sadola | Detton | Kingsaurus III | Gudon | Twin Tail | Gorbagos | Ghostron | Dangar | Stegon | Mognezun | Shugaron | Seamons | Seagorath | Eledortus | Terochilus | Bemstar | Sartan | Magnedon | Beacon | Gokinezula | Zanika | Vacuumon | Kupukupu | Kingstron | Zagorath | Nokogilin | Gronken | Varricane | Yadokarin | Oxter | Plooma | Alien Zelan | King Maimai | Alien Mates | Muruchi | Leogon | Pris-Ma | Draculas | Re-Seagorath | Re-Bemstar | Black King | Alien Nackle | Alien Varduck | Alien Black | Snowgon | Alien Baltan. Jr | Builgamo | Alien Stora | Paragon | Alien Grotes | Kodaigon | Granadas | Alien Centaurus | Robonez | Alien Cygnus-61 | Alien Messie | Alien Zoole | Red Killer | Femigon | Yametaranese | Sasahiller | Alien Ateria | Alien Mysteler | King Bockle | Alien Bat | Zetton II|