Dr. Fuchsberger was determined to find a way to reverse his brother's dwarfism and became quite an expert in molecular and subatomic physics. He worked for a company which happened to be a front for an unscrupulous and rather mad industrialist. Dr Fuchsberger had the funding for an experiment, but when it came to the test stage, he had no test subjects. Frustrated about coming so close he contacted his brother who, although surprised about the research, agreed to undergo treatment. On the night of the experiment, the laboratory was attacked and mostly destroyed by T.I.T.A.N. whose founder, Sterling, had a personal vendetta against Fuchsberger's employer.

His brother was killed, and the laboratory flooded with radiation. Fuchsberger was fired and found himself unemployed and blaming himself for his brother's death. It took three months before he realised that something had changed within him. Although he knew about ubergetics, Fuchsberger hadn't thought of the possibility of being an active uber. When he woke up one day the size of an action figure, he realised that he should have probably submitted himself for a check up after the accident.

He contacted Dr Saul Numen of the Numen-Kami Institute and his active ubergene was confirmed. Fuchsberger realised that he had been given a chance to avenge his brother, although after some initial investigation he found that his former employer had vanished. That led him to T.I.T.A.N. and the diminutive hero actually succeeded in tracking down the terrorist group in Bosnia.

After initially failing to even spark their interest, Zwerg, as he called himself, finally contacted Uber Force to assist him in the capture of the man he blames for the death of his brother. When the German heroes arrived, Sterling and his mercenaries found themselves fighting to the wall. Zwerg was commended for his bravery and ingenuity, and then asked to join the team by Max Uber.

Since that day, nearly ten years ago, Zwerg has been dedicated to assisting U-Force, and particularly Max Uber, and trying to make up for the mistakes of his past.

Zwerg is a reserved man, preferring to pursue research than talk with the press. He considers himself a failure when it comes to his inability to 'cure' his brother, even though his brother never considered himself 'sick' to begin with. This highlights Zwerg's unconsciously prejudiced views. He admires Max Uber as the perfect male specimen, and considers all others to be lacking in some way. He saw his brother as lacking because he was a dwarf, and he considers everyone to be lacking in some way, whether it's physical, mental or spiritual. Whether he likes it or not, Zwerg exhibits views which are similar to the Nazi dream of Aryan purity.

"They never look down, do they?"

Zwerg is able to access a dimensional rift which enables him to shunt energy as well as absorb it. This manifests itself as the ability to shrink to 25cm and increase his density to 6,400kg, abilities he can access separately or simultaneously. He is also able to shunt the effects of attacks to a degree, providing him with resistance to harm. In addition to his uberhuman abilities, Zwerg is also an accomplished physicist and a seasoned brawler.

Zwerg is not normally a tall man, standing at 1.65m, but when he accesses his uber abilities he is able to shrink down to 25cm. As Zwerg, he wears a costume based of Max Uber, with a black armoured uniform, yellow trunks and red mask, gloves and boots. He has two yellow horns protruding from his cowl, but they are just decorative.

Out of uniform, Doctor Fuchsberger wears spectacles, pale shirts and cardigans. His hair is thinning and he looks timid and withdrawn, although when he dons the Zwerg costume he becomes emboldened and, at times, brusque and burly.