Vault of Obscurity 2

I've brought back the Vault of Obscurity, where I talk about a several characters who have too little to talk about for one post so I lump them together. This entry has a theme: homages to DC Comics characters.
Stalker (Martian Manhunter)

This is the only picture I could find.

Stalker was member of Henry Bendix's Stormwatch (a JLA homage). Herny erased the members' memories (including Stalker's). As such, the only thing we know about his backstory is that Stalker is a half-Daemonite (a type of alien). During the team's first mission, all of the team (except for Apollo and Midnighter) were killed. Year later, the Authority fought zombie clones of the team including Stalker clones. However, they were killed by the authority. He had powers similar to Martian Manhunter. He could turn invisible and could shape shift, but had to obey the law of conservation of mass when using the latter.
Andy "Airbag" Soames (Bouncing Boy)

Before he was turned into HDP

Andy was a married man. However, he cheated on his wife. He was one of the people suspected to be the Libra Killer. However, this turned out incorrect. He discovered had the AIDS-stand in S.T.O.R.M.S. (Sexually Transmitted Organic Rapid Mutation Syndrome), which transforms its host into a monster, and he got the diease from a woman he cheated with. Five years after the original series, his S.T.O.R.M.S. turned him into the monstrous Hell Ditch Pilgrim. He attempted to conqueror the multiverse, but Toybox stopped and gave him "eternal peace". Before he had S.T.O.R.M.S., Andy could inflate his body. However, he also did this unintentionally when scared.
Nosferata (Batman)

Not even Adam West wore such a bright costume. 

Purple Hayes' parents were murdered when she was a child. As such, she became immersed in criminology. As an adult, he became the vigilante "Nosferata the She-Bat". She-Hulk and Hayes' womanservant Freda helped her defeat the insane Jack Serious, her parent's murders. She helped the She Hulk againist Adrenazon and was seen at a "Time Infraction Trial". Despite being obessive-compulsive, the She-Bat has trained herself in various field such as chemistry, hand-to-hand combat and disguise. She has a cape that allows her to fly and Nosferatarangs. She owns a car, the Nosferauto, and headquater under her mansion called "the Nosferattic".
References:
http://www.comicvine.com/stalker/4005-54760/
Various issues of Top 10 volume 1
http://www.comicvine.com/airbag/4005-22336/
http://www.comicvine.com/nosferata/4005-42921/