"Data", " Lore"
"Lore" and "Data were both "Soong-type" androids created by "Doctor Nooniain Soong" and "Juliana Soong" at the Omicron Colony. "Lore" was the pure embodiment of A.I. having the first successful positronic brain. Due to his robotic nature, he had abilities the rest of the crew did not posses such as super strength and speed. "Lore" began feeling superior to his fellow crew members leading to him trying to destroy them. After a long and bitter conflict, "Lore" was eventually shut down and replaced by his brother "Data".