The new owner (90% interest) is ST Holding 1:...

The new owner (90% interest) is ST Holding 1: https://opengovau.com/company/674150826They paid $162k for it.
The creditors were given 3% of KLL, presumably against the possibility that one day the shell will be refloated and might give them an opportunity to recoup a little more cash.
Gregory Starr appears to be a full time director of companies: https://www.businessnews.com.au/Person/Gregory-Starr
Gregory Terpens probably just stumped up some cash: https://www.marketindex.com.au/asx/directors/george-terpens
There doesn't seem to be much publicly available information about Richard Campbell Brien, although I found this API call:
https://data-api.marketindex.com.au/api/v1/directors/richard-brienThe API returns a JSON object that contains the following information, which really tells us nothing new:

• profile: Mr Brien has over 40 years experience in the insolvency area as an Offiicial Liquidator and Registered Trustee dealing with a array of administrations both corporate and personal as well as providing advice and management assistance to small businesses.
• companyName: Kalium Lakes Limited
• title: Non-Executive Director

This announcement has a phone number for KLL in case you want to contact the company secretary with your questions:
https://company-announcements.copyright link/asx/kll/8fa4edfe-43fa-11ef-b51d-b681c1fa9655.pdf