Hadrian Greenclaw

Hadrian Greenclaw is a Mechanicsburg resident who appears in the side-story Ivo Sharktooth PJ, which is set in the future relative to the main narrative of the comic. His family is one of the members of the Blood Circle, and at the start of the story his uncle Charlemagne is the familial head. Like his uncle, his hand has been replaced with a mechanical prosthesis, although not nearly so large and elaborate of one.

He grew up as a contemporary of Vanamonde von Mekkan.

Current(ish) Whereabouts
Hadrian is away at Transylvania Polygnostic University when the Siege of Mechanicsburg occurs, and thus is not trapped inside the time-bubble which Klaus Wulfenbach erects around the city.

He successfully graduates from TPU with a degree in Mechanical Systems Analysis, and at least claims that he is present at the very memorable Parisian masquerade party which Agatha and a bunch of other notables crash.

Back Home
When (somehow) the time-bubble is removed from the city, he returns home. He crosses paths with Ivo when the latter is hired to investigate the (oddly temporary) theft of the Golden Snail Harvest Festival race-trophy. For yes, it is revealed that Hadrian is behind said theft, not to mention the murder of his uncle and scores of other senior Blood Circle members. As part of this scheme, he uses that fancy book-learning of his to deactivate most of the Eleven Deadly Sins.

When confronted by Ivo and Vanamonde, he reveals his perhaps surprising motive for all of this: he is a loyal Agatha follower, and upon returning home, uncovers evidence of a plot by his victims to have her assassinated, on the grounds that she would be "bad for business". He tries to have Vanamonde killed as well, on the grounds that the latter man "knows everything" that happens in Mechanicsburg, and thus approves of the plan. Vanamonde's reaction indicates that this particular logical leap may not have been 100% sound.