(covers information from an alternate timeline)
In 1996, Robinson received a grant from entrepreneur Henry Starling and spent most of her time searching for extraterrestrials in Earth's SETI program. Robinson picked up USS Voyager's warp signature on her instruments when the ship was transported back to 1996 after an attack by a 29th century Federation timeship, Aeon, piloted by Captain Braxton, who believed that Voyager would cause an explosion in the future that would destroy his time period. She reported the findings to Henry Starling. Starling, who had found the timeship decades earlier, used its technology to start a high-tech business and intended to time travel using Braxton's ship. This was what would cause the explosion in the future, destroying Earth.
Starling told Robinson to keep quiet about her discovery. However, she transmitted a message to Voyager, and the crew tracked her to Griffith Observatory. Rain met three members of Voyager's crew from the future: Tuvok, Tom Paris, and The Doctor. Starling sent one of his employees, H. Dunbar, to kill her. Tuvok and Paris saved her from the hit man. When Robinson questioned what they were up to, Paris told her they were secret agents tracking a Soviet KGB spy operation, but Robinson told them that the Soviet Union and the KGB no longer existed. She joined forces with them in stopping Starling's plan.
During her acquaintance with members of the Voyager crew, Rain became particularly fond of Tom Paris, due to their mutual love of vintage science fiction films. The two later shared a kiss just before Voyager departed for the 24th century. She was also disturbed by Tuvok's seemingly awkward behavior, referring to him as a "freakasaurus". (VOY: "Future's End", "Future's End, Part II")
Rain Robinson was played by actress and comedian Sarah Silverman.
In script sources, this character was commonly referred to (such as for denoting dialogue) simply as "Rain". In the script of "Future's End", she was described as "A striking, mid-20's, grad student with a sarcastic wit and hip, sexy fashion sense."
Robinson makes an appearance in the novel The Rise and Fall of Khan Noonien Singh, Volume Two as the would-be assistant to Roberta Lincoln after the retirement of Gary Seven. The novel Hearts and Minds reveals that she later quit that role after learning that Seven could have prevented the World Trade Center attacks in which her father was killed.
She also appears in the Star Trek: Myriad Universes story "Seeds Of Dissent" in Infinity's Prism as the navigator of the SS Botany Bay, which was launched from Earth in November 2010 following Khan Noonien Singh's victory in the Eugenics Wars.