•Chatbots are increasingly used as substitutes for human service agents in online shops.•Anthropomorphizing chatbots increases perceived consumer-chatbot similarity.•Matching chatbot gender with consumer gender positively impacts consumer behavior.•First insights indicate that non-binary consumers prefer neutral chatbots. Chatbots are increasingly used as substitutes for human service agents in online shops. This has led researchers to analyze how chatbot characteristics influence consumer responses. However, while the relevance of chatbot characteristics has been examined, to date, consumers’ personalities have remained unattended in the research on this innovative mode of online support. Therefore, this study aims to understand how the interaction of consumer characteristics and chatbot characteristics influences consumer behavior. In doing so, we focus on how chatbots’ visual cues (i.e., anthropomorphization, gender) influence consumer behavior while also considering consumers’ self-concept. To answer the research question, we first conceptually discuss why consumer behavior depends on perceived self-congruence between consumers and a chatbot, which can be reached by anthropomorphizing chatbots and giving them the “right” gender. Subsequently, based on multiple studies, we empirically test the hypotheses considering male, female, and non-binary consumers. Our results demonstrate the relevance of both chatbot anthropomorphization and chatbot gender.