MenteeBot is a full-size humanoid robot designed to perform complex tasks in household and industrial environments. Standing approximately 1.75 m tall and capable of carrying up to 25 kg, the robot integrates AI across natural language understanding, 3D vision, dynamic navigation, and manipulation. It uses simulator-to-reality training to develop locomotion and balancing in virtual environments before transferring to real-world performance. MenteeBot builds real-time 3D cognitive maps, interprets voice instructions through large language models, and executes full end-to-end actions without hard-coded routines. It is available in residential and commercial variants, with modular actuators and camera-only sensing tailored for flexible, human-like operation.