Nago is a unique character from the BlazBlue series, serving as the loyal feline companion and weapon of Rachel Alucard. Unlike typical fighters, Nago often takes the form of a large, magical black cat capable of transforming into various objects, such as an umbrella or chair, to assist Rachel in battle. Nago is known for his sarcastic personality and witty banter, frequently providing comic relief while also playing a crucial supporting role in battles and story events throughout the series.