Mariani Ramli a.k.a. Bam Arrogancia founded the Malaya Gibbon Rehabilitation Project (Malaya GReP) in 2013 and the society called the Gibbon Conservation Society (GCS) after learning about the plight of the endangered gibbons and other primates in Malaysia.
She has a degree in animal biology, was a wildlife ranger with the Malaysian Wildlife Department for more than 10 years, has worked as a project coordinator and researcher for the Copenhagen Zoo, studying flat headed cats, and she has studied gibbon rehab from international organisations such as Phnam Tamao Wildlife Rescue Centre in Cambodia and Gibbon Rehabilitation Project in Thailand.