 He later regains all the knowledge and skills he had absorbed before becoming depowered, including many of the X-Men's considerable expertise in science and physical combat, making him a stronger addition to the X-Men.Despite being human, he remains with the X-Men as a substitute instructor and trainee for stories over a number of years.David Alleyne is a naturally intelligent boy, who finds upon becoming a teenager that the answers to his exams and assignments begin appearing in his head whenever he is in the same room as his teachers.