"She scared me" said Osborne, who had never seen such a bizarre audition in her four years of judging.
Hopeful 31-year-old Totoshko told the judges she had flown all the way from Japan to meet Cowell. "I like you very much" she coyly told Cowell.
The judges were all won over by her doll-like persona but not so impressed with her Tamogotchi version of Sinatra's "My Way." She was not, however, cast aside with the usual Cowell cruelty.
"You're very cute," Cowell said. "I might have to take you home with me." He then walked her out. Despite not going through to the next round Totoshko seemed pleased with the whole experience. "I met Simon today and he kissed me and he hugged me and I'm very happy," she told the cameras.
The relationship between Sharon Osborne and her fellow judges was not always the smoothest. Her rivalry with Dannii Minogue constantly made headlines in the British tabloids. She announced on British television, "She knows she's there because of her looks, not because of her contribution to the music industry."
Minogue was more restrained in her response, saying only that judging with "older" people made her feel younger and prettier."
"We're like a soap opera," Osbourne remarked. "I said to Simon yesterday, it's like bloody Dynasty now."
Cowell, who complained of being stuck in the middle, said that he had to give them equal amounts of attention to both in order to avoid an atmosphere. "When I sit next to one, the other sulks."
After four years of judging, Sharon left the "X Factor" in 2008. She later said, "I left because of Dannii Minogue, simple as that."