Eric Greenhilt (1162 - 1165) was the baby brother of Roy. He used to play with a piano toy brought to him by his honorary uncle Myrtok. He was killed eighteen years ago at the age of three as a result (likely indirectly) of one of Eugene's experiments. This further strengthened the animosity between Roy and Eugene. After his death his parents attempted to resurrect him, but none of their efforts succeeded; Roy later speculated this was because the Afterlife was so enjoyable, Eric's soul never thought about trying to go back. His sister, Julia, was born two years later.