The name "Marilli" does not appear in available sources documenting "Bokutachi Pichu Brothers: Fūsen Sōdō no Maki" or related Pichu Brothers media such as "Pokemon: Pichu Bros. in Party Panic". Cast lists, synopses, and production details for these titles reference characters including the Pichu Brothers, Meowth, "Upah," "Nazonokusa," and "Karakara," but do not include Marilli. Voice actor credits similarly lack this name.