About a week into the Musk v. Altman trial, we’ve heard from some of the most powerful people in tech — including OpenAI president Greg Brockman, Elon Musk’s fixer Jared Birchall, and Musk himself. But one of the most prominent characters is hovering around the margins: Demis Hassabis, CEO of Google DeepMind. Hassabis is the architect of Google’s in-house AI lab. He founded DeepMind as an independent startup in 2010 and sold it to Google four years later, reportedly for between $400-650 million. Since then, he’s been at the helm of many of Google’s largest AI research breakthroughs, like AlphaFold — and he’s climbed the ladder from there, now leading Google Gemini, the team formerly known as Google Brain, and even for-profit DeepMind spinoff Isomorphic Labs . From the start, OpenAI was designed to oppose Google. Musk testified that he was inspired to found it by a conversation with Google’s Larry Page, where Page — in his telling — shrugged at the notion of AI wiping out humanity.…