Enables DNA-binding transcription repressor activity, RNA polymerase II-specific. Involved in several processes, including cellular glucose homeostasis; negative regulation of autophagy; and regulation of transcription, DNA-templated. Located in cytoplasm and nucleus. Is expressed in several structures, including blastocyst; genitourinary system; and nervous system. Orthologous to human FOXK2 (forkhead box K2). [provided by Alliance of Genome Resources, Apr 2022]