A person (often refers to a female) who looks or appears to be cute, cuddly, laid-back, soft & sexy but knows how to be smart and sassy, to be strong & witty in handling every day's challenges.
An attagirl.
An achiever.
Soft-hearted but determined person.
In spite of all the troubles, she was able to finish the task on time; she's such a bunnybear!
He cried in front of me but he'll always be my bunnybear.
Most men are attracted to a bunnybear type of lady.