*Echo is a mobian dolphin of average height. She has purple skin and a white muzzle with a rounded snout, along with some purple dots on her cheeks which resemble freckles. She has a dorsal fin on the top of her head, two on the back of her head, and one more on her back, as well as a caudal fin for a tail.

As attire, she wears the standard Meropis City Guard uniform, which includes a black shirt and shorts, green additional garments and a golden helmet adorned with shells. Uniquely, she also wears a shell bracelet around her right ankle.

Echo is very dutiful and dedicated, though maybe to the point of being slightly uptight. She also takes her job very seriously as she followed and upheld Captain Striker's orders without question. She seems to also consider Striker's views on others, as she questioned if Razor's activities supposedly validated Striker's suspicions on him. However, she does not do too well out of her element, and has trouble understanding surface customs.

When on her own assignment, Echo maintains her commitment, although her focus on her objective leads her to extreme lengths to complete it, no matter the payment. She is quite determined and considerate of every detail in her work, looking into all the information she could find and preparing for the scenarios she came across. Her sense of duty can lead to moments of worry and uncertainty however, and she can feel strong concern for the safety of the royal family.

As an aquatic mobian, Echo is capable of aquatic respiration, allowing her to breathe both on land and underwater.

Echo carries a bident, which is the standard weapon for the Meropis City Guard. In addition to its usage in melee combat, this weapon can shoot out a thin laser from its points.*