The Zeku were the people who lived on the planet of Zekulae. Zekulae was situated within the Zeemacht Cluster in the Inner Rim region. Their home world was a desolate place, famous for its dark, mineral-heavy earth, which was filled with blue crystals. The soil's consistency was so delicate that it permeated the entire planet. The Zeku's governing body had a lenient attitude regarding regulations, leading to frequent instances where disagreements were settled with either physical violence or blasters.
From Zekulae, one could observe a globular cluster composed of orange and red giants, along with neutron stars, pulsars, and blue stragglers, collectively known to the Zeku as Cosm's Well.
Jude Watson conceived of the Zeku for her young adult book, Jedi Apprentice: The Death of Hope, which came out in 2001. The book does not explicitly state whether "Zeku" refers to a specific species or is simply a term for the inhabitants of Zekulae.