text: Martin appears in a crossover episode of Totally Spies!. During the episode, he is immediately smitten with Clover, even though she is uninterested in him. Towards the end of the same episode, Clover finally showed interests in Martin and even tries to get his attention, but Martin and Alex have hit it off due to a shared love of comics and video games. Throughout the episode, Martin continuously describes Sam as a "really lame buzz-kill", but doesn't lash out at him due to her composed demeanor.
  Diana Lombard (voiced by Kelly Sheridan; Dorothée Pousséo):
  Diana is Martin's stepsister, who is his complete opposite. She is also 16 years old and an agent for The Center, while attending Torrington Academy. She is a rigid overachiever, and often has a hard time keeping her cool with Martin. The stepsiblings argue frequently, with such arguments ending in some sort of bet that Diana usually loses. Diana can be timid at times – which leads to Martin calling her a "wimp" – but can show great courage when called upon. Her intelligence often comes in handy on their missions. Never sharing Martin's love of the paranormal, she often tries to reason with logic instead of jumping to conclusions.