Echo in the comics can imitate anything she witnesses. She can replicate complex martial arts moves, acrobatic stunts, and even the way someone thinks during a fight. It's a unique and powerful ability that gives her an edge.
In most comic versions, Echo isn't deaf. However, there might be alternate or special story arcs where this could potentially be a trait, but it's not a common characteristic.
Sure, Echo is portrayed as deaf in the comics. This trait plays a role in shaping her personality and the challenges she faces throughout the comic series.