Gerrard E. Krause was a wealthy gentleman who owned the B1 series machine named B1-66ER. He was killed along with at least five of his seven dogs and Martin Koots by the machine because it believed that they were planning to deactivate him, and that it did not wish to die.
Gerrard killed by B1-66ER
B1-66ER's owner was only named in the comic and was not explicitly named in The Animatrix story, The Second Renaissance.
Gallery
Gerrard and his seven dogs
Gerrard wants B1.66ER deactivated
Martin going to deactivate B1.66ER
B1.66ER threatening Gerrard, having already killed his dogs and Martin