Devices, systems, and methods with behavioral one-time-passcode (OTP) generation. In one example, a server includes a memory and an electronic processor communicatively connected to the memory. The memory includes a behavioral one-time-passcode (OTP) program and a user profile repository. The electronic processor, when executing the behavioral OTP program, is configured to receive a one-time-passcode (OTP) request, generate a behavioral one-time-passcode (OTP) based on a user profile stored in the user profile repository in response to receiving the OTP request, and output the behavioral OTP that is generated.