United Kingdom, Dec. 22 -- Kunal Nayyar likes to "pay random families' medical bills".

The 42-year-old actor - who earned an estimated $1 million per episode of the Big Bang Theory - insisted his wealth does not "weigh heavy" on him because he and wife Neha Kapur like to use their fortune to help other people in various ways, including funding university scholarships for young people from disadvantaged backgrounds.

He told the i newspaper: "Money has given me greater freedom and the greatest gift is the ability to give back, to change people's lives...

"We also support animal charities because we love dogs.

"But what I really love to do is go on GoFundMe at night and just pay random families' medical bills. That's my masked vigilante ...