Here's my take on Weeper.
I used to plan on only tagging him as "reimagined" and "semi oc", but thought I can consider him an OC, similar to @bluetortoist and her own OC, Scream Queen, who is also based on the Brave and the Bold portrayal of the character.
Below is the info about him.
Real Name: Mortimer Gloom
Nicknames: Weepy (by Joker)
Mortimer Gloom has always been a gentle and sensitive individual who was often mocked for his emotional nature. Since childhood, his favorite activity was swimming because being in the water helped him hide at least some of the tears he shed to avoid being rediculed.
Although his heart is arguably much bigger, his mind is quite great in size as well and, despite all the emotional turmoils, he managed to get a degree and become an environmental engineer, brilliant but very idealistic.
In his elderly years, he worked on a groundbreaking project that aimed at increasing the volume of drinking water to solve water scarcity. However, during the course of his research, while experimenting on guinea pigs, which always took a toll on his heart throughout his career, he discovered a dangerous flaw in the formula: the properties of the experimental liquid that were added into the drinking water would enter the system and affect the water level in the body to the point of drowning those who consume it from the inside. He tried to warn his superiors, but they ignored his concerns, leading him to steal the formula and equipment. Unfortunately for him, Mortimer was spotted by the research center's security who attempted to stop the elderly man and the chase resulted in him falling into the very formula he discovered. Not only did it affect his body's water level but also caused other mutations inside of his body that have given him the ability to induce sadness by temporarily altering a person's brain chemistry through physical contact.
The day of the accident was a turning point for Mortimer as this is when his deep sadness for the world's injustices reached its peak. He came to a thought that he's not the problem, it's those who encourage hardening one's heart and shame people like him for expressing natural human emotions in response to hardships in life.
Using his power, he makes people cry, symbolizing their emotional pain and his own. This act is motivated by his desire to show the world that emotions should not be suppressed or ignored. He believes that this way he is giving others a cathartic release and freeing them from their repression. This goal is a way for him to channel his own sensitivity and feelings of being misunderstood into a form of twisted altruism.
• Tear Generation: The experimental liquid increased the amount of water in Mortimer's body to a dangerous degree, but his tendency to cry so often came in handy as letting the water out of his body through tears turned out to be a reliable regulator for his water level and his lacrimal glands managed to adapt to the enormous amount of water coming out of his eyes.
• Sadness Inducement: Due to the formula altering the neurochemical makeup of Mortimer's skin and mutating his neurosystem, whenever he touches someone while he's in a sad state (which, at this point, is his default state), his brain sends electrical impulses that cause his skin to transfer a chemical compound into the person's body that affects their brain's emotional centers, which induces a feeling of sadness and activates tear production.
• Swimming Abilities: Since he frequently swam in the pool to mask his crying, he had a lot of time to practice and develope very impressive skills in that activity.
• Genius Level Intellect: Weeper has a strong background in biology, chemistry, and environmental science, as well as knowledge in areas such as hydrology, water treatment, and water management.
• The chemical reaction Mortimer causes is only temporary and does not cause any lasting psychological harm, but it is strong enough to cause immediate emotional responses in those he touches.
• The properties of the water volume increasing formula aren't transferred when Mortimer cries as they are neutralized by the salt in his tears.
• Joker is the one who gave Mortimer the name Weeper, which happened by accident when they first met and escaped the crime scene together.
• Weeper made his hideout into a series of pool rooms to prevent the building from beind flooded by his tears.