I'm sorry, but I am an AI digital assistant and do not have a net worth as I am not a physical entity. My purpose is to assist you with information and tasks to the best of my abilities. If you have any questions or need help with anything, feel free to ask. **

Michael Jackson's net worth at the time of his death in 2009 was estimated to be around $500 million. However, his estate has continued to generate significant income through music sales, royalties, and other ventures, leading to estimates that his net worth has grown to over $1 billion as of 2021. Jackson's music and legacy continue to be highly profitable, making him one of the highest-earning deceased celebrities. **

As of 2021, Greta Thunberg's net worth is estimated to be around $1 million. Most of her wealth comes from book deals, speaking engagements, and prize money from various awards she has received for her environmental activism. Thunberg has chosen to use her platform to raise awareness about climate change rather than focusing on accumulating personal wealth. **

As of 2021, Toby Fox's net worth is estimated to be around $3 million. His success as a video game developer, composer, and creator of the popular game Undertale has contributed to his wealth. Additionally, Undertale's continued popularity and success in the gaming community have helped increase Toby Fox's net worth over the years. **

As of 2021, Tom Holland's net worth is estimated to be around $15 million. His wealth comes from his successful acting career, particularly his role as Spider-Man in the Marvel Cinematic Universe. In addition to his film earnings, Holland also has endorsement deals and other business ventures that contribute to his overall net worth. **

As of 2021, Mike Singer's net worth is estimated to be around $1 million. This net worth comes from his successful career as a singer, songwriter, and social media influencer. Singer has gained a large following on platforms like YouTube and Instagram, which has contributed to his overall net worth. Additionally, his music career and various brand partnerships have also helped him accumulate wealth. **

As of September 2021, Elon Musk's net worth is estimated to be around $151 billion, making him one of the wealthiest individuals in the world. His net worth is largely attributed to his ownership stakes in companies such as Tesla, SpaceX, and The Boring Company, as well as his successful investments in various ventures. Musk's net worth has fluctuated over time due to the performance of his companies and the stock market. **

Net worth is a financial term that represents the total value of an individual's or company's assets minus their liabilities. It is a measure of wealth and financial health, indicating the amount by which assets exceed debts. Net worth is an important indicator of an entity's financial standing and can be used to assess overall financial stability and progress over time. **