River is an enthusiastic and talkative freshwater river dolphin who loves to chat and share news with Marty and his friends. She is quick to assist, as seen when she eagerly agrees to find the Electric Eel Twins to help recharge the Drawing Board, demonstrating her helpful and proactive nature. Her lively personality and tendency to laugh easily bring lighthearted energy to the animated scenes. River's interactions with Marty showcase her loyalty and her role as a connector within the animated community. Known for her high intelligence and genuine care for others, River's enthusiasm is infectious as she performs graceful spins and leaps to greet Marty, her movements conveying both excitement and a deep sense of empathy.
