Ultraman: Series 1 is presented by RRParks Cards. RRParks Cards trading card series generally focus on monsters and humor, with limited productions of very large trading card sets, such as this highly successful project featuring Ultraman and celebrating the series' 55th Anniversary.
For this set, Anastasia Catris contributed a run of 16 sketch cards featuring various monsters and heroes from the series. To learn more about sketchcards (also known as ATCs or ACEOs), please visit the artist's blog on the subject.
The artist has a select number of Artist Proof sketchcards available from this set. You can see the current selection available for purchase on her Etsy Store.