L1 users: 218,000 (2013 J. Leclerc).
Mayo Kebbi Est region: Kabbia department, north of Kélo (Léo dialect); Tandjile region: Tandjilé Ouest department (Marba and Kolon dialects).
Marba (Banana, Bananna, Maraba), Kolon (Kolong, Kulung), Léo (Leou, Lew), Monogoy.
Used as L2 by Marfa [mvu].
Latin script [Latn].
Different from Marfa [mvu] (Marba) of Chad, which is Maban.