Maya Lopez as "Echo"

Origin

Maya was born deaf, and whose father, Willie "Crazy Horse" Lincoln" was working with the Kingpin of crime. When she was young, her father was killed by his boss, but ironically, Crazy Horse wanted Fisk to take care of his daughter. As he lay dying, he gave his daughter a bloody handprint over her face. Wilson took Maya to a boarding school for special children, because of her disability. There she discovered that she had a talent of instantly memorizing what she has seen and being able to copy the exact movements (photographic reflexes, much like the Taskmaster). Wilson then transferred Maya into another school for prodigies, there she became a gifted woman. One day, when Maya visited the grave of his father, she asked the Kingpin who murdered him and Fisk replied that Daredevil was the one responsible.

Kingpin arranged for Maya to meet Matt Murdock to determine his weaknesses. As soon as they met, they fell in love with each other. Maya later developed the guise of Echo, based on her talent to copy movements and painted a handprint over her face in honor of her father. She hunted Daredevil down until the point that she found out that Matt and Daredevil are one person. She also found out that Matt couldn't have murdered her father because he was still a little boy. Matt managed to correct the lies that Kingpin told to Echo and soon Maya was out for revenge for Fisk where she managed to blind him.

After that she fled and eventually returned but when she tried to reunite with Matt she realized that he has moved on and was now married to the blind Milla Donovan and lastly, the Kingpin was still alive. When Maya visited Fisk in prison, he told her that he doesn't blame her for hating him and that for what it's worth, Fisk loved her like the daughter he never had. She left again to search  for herself, and in her travels she met Wolverine, who taught her about the Japanese culture and organized crime. In Japan, she finally found a peace of mind she never had.

Ronin and the Avengers
After being unable to join the Avengers for personal reasons, Daredevil recommended Maya to Captain America, in order to help

Echo as "Ronin" the masterless samurai

After joining the Avengers, Maya returned to Japan, keeping her eyes on Elektra Natchios, the deadly assassin leading the Hand. She also checked on the Silver Samurai from time to time, hopefully trying to solve the conflict between The Hand and Clan Yashida.

As Ronin, Maya fought Elektra and was killed, but was immediately resurrected by the Hand. It was the same process that was used to resurrect Elektra. They took Maya captive with the intent of turning her into an assassin for The Hand. Luke Cage, Spider-Man, Wolverine, Doctor Strange, Spider-Woman, Iron Fist, and the new Ronin (the New Avengers) rescue her and escape. Elektra then sent The Hand after them.

Maya and the New Avengers encountered the Hand at the Silver Samurai's ancestral home. Initially, Elektra is able to activate Echo's programming, forcing her to fight the New Avengers and even badly injuring Doctor Strange. However, Doctor Strange was able to free her from the brainwashing, and in retaliation, Maya kills Elektra (who is then revealed to be a Skrull in disguise). When they returned, Maya officially gave up the identity of Ronin to Hawkeye. After that, the New Avengers travel to Stark Tower to stop the impending attack of The Hood, but they were suddenly attacked by Symbiotes, one of which attached itself to Maya.

In the event of the World War Hulk, Echo, Iron Fist and Ronin tried to protect Rick Jones, but they were defeated by Hiroim and Elloe of the Warbound. They later become prisoners and were given obedience disks to prevent them from fighting back.

Secret Invasion
Recently it was implied in the conversation between Echo and Wolverine that they had a brief romance in Japan. Maya had also had a run-in with a Skrull impersonating Daredevil and with the help of Logan, they were able to defeat the shape-shifting alien. After that, Clint and Maya began a relationship.

Powers and Abilities

Maya Lopez is an Olympic-level athlete possessing "photographic reflexes". Just by watching other people, she has become a concert-level pianist, a strong martial artist, a highly skilled acrobat, and a gifted ballerina (and on one occasion even piloted a Quinjet for a few minutes). In addition, she has also gained Bullseye's uncanny aim and Daredevil's acrobatic abilities after watching tapes of their fights.

Although she has great potential, deafness gives Maya Lopez great drawbacks. Her absolute reliance on visual cues renders her helpless in the dark, and her ability to communicate by reading lips prevents her from taking oral commands and communicating with people who are wearing masks or are not in direct visual contact. However, she has been incorrectly depicted as being able to hear and respond to voices despite not seeing the person's mouth due to standing away from them or the person talking right behind her.