Dorami (born on December 2, 2114), -chan, is the sister of Doraemon. She is yellow and has ears that resemble a large red bow. She happens to be about 2 years younger than Doraemon. Strangely enough, they are siblings due to the fact that they shared half of the oil from a can. She lives in the 22nd-century Tokyo with Sewashi. She sometimes visits Nobita with a time machine when Doraemon is "off-duty" or to help Doraemon with something.
She likes melonpan and is afraid of cockroaches. She is also shown to be a more advanced robot than Doraemon (Dorami is able to produce 10,000 horse power, in comparison to Doraemon's 129.3). Different from her malfunctioned brother, she's the smartest student during her school time, and has better skills in using gadgets. She also has her own spin-off manga. Her boyfriend is Dora-the-Kid of The Doraemons.
She looks similar to Doraemon, the only difference is the design of her 4D pocket, and her ears which resembles a big bow.
She shares the same fear with Tamako Nobi, cockroaches.
She is usually nice and always knows what to do, unlike Doraemon.