Maow companions: Katak, an old kokot of one of the first generations Dr. Blackwell and Dr. Kaibell had brought to life, was raised by Mace in Mace's childhood but now cares for Mace, making sure the man eats and sleeps in between the long hours of intensive research and work Mace does.
Family: His sylvan father died in a lab accident which destroyed most of his work, though Mace's mother, a phytic highlander, still lives in Hartsylla, continuing her own research and care of the sylvan orchards, and is working magically to reclaim the Dead Zone. His cousins Saria and Jason--on his mother's side--are also field researchers.