Unique Transformer bodies can be created from scratch only by very highly-skilled technicians and medics. Such construction is a long and painstaking process, which determines the Transformer's physical capabilities and weapons, as well as alternate mode(s). The most difficult portion of the construction, creating the laser core, can be accomplished only by a very few (ex. Soundwave, Hook, First Aid). The laser core is a crystalcircuitry matrix that holds a Transformer's core personality programming and sentience when programmed. Once initially set, it becomes nearly impossible to modify in any predictable way, and most any modification attempts will cause serious, possibly permanent damage.