Maniac Ventures is run by Andrew Arruda as a solo GP fund that combines his personal angel investing with his operator background in healthcare (Flexpa) and AI/legaltech, and it targets founders with an obsessive, hard-to-stop drive rather than using a typical multi-partner selection process. The fund often serves as the first investor in frontier bets like brain-computer interfaces and wastewater-to-fuel technology, and Arruda has said his plan is to run the fund using his own capital and AI over time instead of a traditional institutional structure.