Dorami is different from her brother Doraemon. She is an excellent robot cat. When Doraemon returned to the 22nd century, Dorami temporarily replaced his brother to help Nobita.

Calm-headed, she seldom loses her temper and is more cautious than Doraemon, but Dorami is too persistent, because Dorami is a high-priced product (Doraemon is a defective product ...), and she won't be like Doraemon when she uses a treasure bag! Dorami's treasure bag is more exquisite and durable than Doraemon's (the pockets of younger brothers and sisters can be disassembled). Sometimes Doraemon asks Dorami to help clean up the mess. Brother and sister have a good relationship.