What is the Source of Reinforce II ?

Reinforce II

Rein, Reinforce Zwei, リインフォース II

Reinforce II, also known as Zwei, briefly appears at the end of a series. She's part of Hayate's task force and wears the uniform. As a smaller version of Reinforce, she can be summoned as a hologram from the Schwertkreuz. Promotional pictures show her accompanying Hayate in StrikerS. Zwei is solid and requires daily sustenance; she has a designated space within Hayate's bag. She holds the rank of Sergeant Major and serves as Hayate's SNCO/Chief of Staff in Lost Property Management Division 6. In the anime, Zwei can unify with other Wolkenritter members (Vita and Signum) to boost them in battle, but their union is not as effective due to compatibility issues. When united, their clothing changes color to white.

Spoilers:

She holds the rank of Sergeant Major and serves as Hayate's SNCO/ Chief of Staff in Lost Property Management Division 6.In the anime, she is shown capable to unifying with other Wolkenritter members (Vita and Signum) to boost them in battle, although because of their incompatibility, their union is not as good as Hayate's. When unifying with them, their clothes change its color to white. Magical Girl Lyrical Nanoha StrikerS:Reinforce II is a smaller version of Reinforce that has been accepted as a member of Hayate's task force in the Time-Space Administration Bureau; she even wears the uniform. She can be summoned as a hologram from the Schwertkreuz, and promotional pictures for StrikerS show a very solid Reinforce II accompanying Hayate as well.Reinforce II (pronouced "Zwei") is apparently solid, and needs to eat and sleep daily; she has a "room" of sorts in Hayate's bag. She holds the rank of Sergeant Major and serves as Hayates SNCO/ Chief of Staff in Lost Property Management Division 6.In the anime, she is shown capable to unifying with other Wolkenritter members (Vita and Signum) to boost them in battle, although because of their incompatibility, their union is not as good as Hayates. When unifying with them, their clothes change its color to white. Magical Girl Lyrical Nanoha StrikerS:Reinforce II is a smaller version of Reinforce that has been accepted as a member of Hayates task force in the Time-Space Administration Bureau; she even wears the uniform. She can be summoned as a hologram from the Schwertkreuz, and promotional pictures for StrikerS show a very solid Reinforce II accompanying Hayate as well.Reinforce II (pronouced "Zwei") is apparently solid, and needs to eat and sleep daily; she has a "room" of sorts in Hayates bag.