Hayate's Second-in-Command in Long Arch as well as the son of TSAB Admiral Leti Lowran. He has known Nanoha, Fate and Hayate for some time and is childhood friends with fellow MS6 member Shario Finieno. He is allegedly named for the TVR Griffith.    --Wikipedia

Set 10 years after Mahou Shoujo Lyrical Nanoha A's, Nanoha, Fate, Hayate and the rest of the crew are now working full time in the Time-Space Administration Bureau. Nanoha is a combat instructor, Fate is a special investigator, and Hayate is a commanding officer. They must unite once again to save the dimensions. Introducing new characters as well: Subaru, Teana, Caro and Erio. Stand by. Ready. Set up!

__Non-anime roles:__ 
-Motoki Mihara (Vin Threet) in "Time Hollow ~Ubawareta Kako o Motomete~" (VG) (Japanese)

Chapters 1-3 are the events that occurred between the end of A's and the start of StrikerS. 
Chapters 4-12 are side stories about the characters. 
Chapters 13 &amp; 14 are the events that occurred after the end of StrikerS. 
Chapter 15 is a special from Megami September 2009 (also events after the end of StrikerS).

Griffith Lowran