In character refers to someone who is consistent with their usual behavior or personality. There are many synonyms that can be used to convey the same meaning, such as typical, characteristic, habitual, customary, or consistent. These words indicate that the person is acting or behaving in a way that is expected of them based on their personality or previous actions. Additionally, phrases such as "true to form" or "typical of them" can also be used to describe someone who is in character. Overall, there are many ways to express the concept of someone behaving in a consistent, expected manner.