While Angels and Goddesses are closely related, not all Angels come from Goddesses. An Angel, like a Goddess, is a being of divinity; however rather than divining it's sanctity from itself or a concept as a Goddess would, Angels divine it from an external source. The most common source of an Angel's divinity are Goddesses, as they are the most powerful beings which are most likely to seek to create extensions of their will. There is occasion where another type of being may find they require a devotee that other forms of simulacrum will not fulfill, simply by their nature as a being not entirely composed of devotion. Even the most dutiful Dolls and pathetic Pilots will eventually turn on their Mistresses should the orders they're given be too inhumane, but not an Angel. An Angel has no concern for humanity. Its entire purpose is its devotion to its Maker, its singular goal to serve her whims as best it's able.Though an Angel may be a creature of judgement, its retribution is purely for those whom its Maker points it towards.
There are many with the magical or technological capabilities to create an Angel; exceptionally powerful witches, exceedingly affluent handlers, and even particularly well-crafted Dolls all have the talent or resources to forge one. For a mortal magic user such as a Witch or Doll, forging an Angel consumes a piece of one's magical ability. For a being borne of devotion to an individual to exist, a piece of that individual's being must exist within it. For this reason, you will rarely see a Witch with more than one or two Angels, as they do not have an infinite font of power to draw upon, unlike a goddess. For those not blessed in the arcane arts, a much heavier toll must be paid to forge an Angel. Handlers who stalk the halls of their bases flanked by Angels will do so with the pneumatic hiss of their artificial limbs announcing their presence.
There is, however, another way to create an Angel, albeit indirectly. Any magically imbued being may become an Angel once they reach a certain level of devotion to an entity which has spent magical energy on them. All that this process requires is this latent magical energy and that they hold their Maker dearly in their heart. Once the required level of devotion is reached, the residual magic and the reflection of its Maker which the subject holds dear react and cause a metamorphosis to take place, transforming them into an Angel. This process follows the same rules as a forged Angel, and as such the magical energy which was spent on their nascent form is consumed in their creation. Contrary to popular belief, Angels formed this way are not weaker, less devoted, or different appearance-wise than their forged cousins, as they are borne of the same basic principles and magic.