Momoko

She's Rini's close friend in the present, who appears a lot in the late Sailor Moon R series with brown hair. She begins to appear again in SuperS with purple hair, she also appears in the manga. She has no clue who the senshi are and doesn't even care.
 
 
 

Tomoko Tatake

She is Lita's pal in her old school (the one she leaves because of her sempai), she looks a lot like the Sailor Moon S villain Cyprine. She's a timid girl who likes to write tragic books.
 
 
 

I forgot her name!

She appears on a SuperS episode, she has a deep crush on Darien whose her teacher in college. She thinks about confessing her crush on him, but by seeing Sailor Moon and... Chibi Moon fight over him, she decides to forget it. She discovers who Sailor Moon is, but really doesn't care.
 
 
 
 

Pegasus
His real name is Helios, a personality lacking priest who lives in Helyson, in the center of Earth. He protects the land of dreams called Illusion with his prayers. His land was attacked by Death Moon because of their desire for the Golden Crystal and he gets imprisoned by Neherenia, but after seeing Rini's great dream to become an adult, he turns his soul into a Pegasus and hides in her dreams. Death Moon finds him and he is forced into his body and gives the Golden Crystal to Neherenia by threat. After Sailor Moon defeats Death Moon, he returns to his land, because he isn't allowed to stay in the Earth longer than necessary. He has a small crush on Rini.

There's a bunch more Sailor Moon friends and allies, but I don't have the pics scanned, tough luck.