Yes. The Star Wars galaxy does have 20 million sentient species. They come in all shapes, sizes, colors, unusual features, etc. There is also a reference book of them (excluding non-sentient and extragalactic ones), because in addition to their large portraits, they get a 1 1/2 page detailed description of their species, their histories and what planet and/or moon they're from, which is at least 30 million pages in length in the book.
trandoshians
By using your imagination. Tons of Star Wars fans have written their own fictions and created tons of their own things, including names, species, locations, battles, etc.
Star Wars played in 13 different countries.
Chewbacca is from Star Wars, not Harry Potter. He is a Wookiee.
Jar Jar Binks is a Gungan.
billions all sorts of made up creatures are in star wars
There are two sentient species that are native to the planet Ryoone in Star Wars: the Baragwin and the Houk.
A species out of star wars
20,000,000.
She is a Zabrak
ewok
There isn't a character named Nikto. Nikto is actually an alien species in Star Wars
trandoshians
There were many Jedi in Star Wars.
There are 20 million sentient species in the Star Wars galaxy, so each sentient species (excluding humans) has its own native tongue, so there are 20 million alien languages for each one of them.
There are billions of Star Wars characters.
Countless Jedi are in Star Wars