Killiks are something from EU both very early in the SW universe and late after the movies. They're insects part of a hive mind, the celestials used them to build centerpoint station and the other one which has the name I can't remember and can't be bothered to conjure up... basically they were the first inhabitants of Alderaan, were a hive mind then the celestials convinced them all to move but apparently some of them looked at their natural hive mind and went "lolnope".