Can you guess who it is? This legendary figure is now 98.

Daniels has said that he works with a personal trainer, attends conventions and records personalized Cameo videos for fans.

He told People around his 99th birthday that producing those videos gives him an opportunity to continue performing and remain productive.

That detail feels particularly appropriate for someone whose career has crossed so many different eras.

Daniels was born before commercial television became an everyday fixture in American homes. He built experience on the stage, appeared in major films, became part of landmark television programs and eventually entered the world of personalized digital messages for fans.

Few careers provide such a clear bridge between generations of entertainment.

More Than KITT and Mr. Feeny

It would be easy to summarize William Daniels with two names: KITT and Mr. Feeny.

But doing so would leave out much of the story.

He is a Broadway veteran, a two-time Emmy-winning television actor and a performer whose credits extend across decades. He portrayed John Adams on stage and screen, appeared in films including The Graduate, became Dr. Mark Craig on St. Elsewhere, gave KITT his unmistakable voice and later became one of television’s best-remembered fictional teachers.

Meanwhile, his partnership with Bonnie Bartlett developed alongside that extraordinary professional journey.

Their 75-year marriage has included success, hardship, family and changes that they have discussed openly rather than presenting their relationship as perfect.

Perhaps that makes the milestone even more meaningful.

At 99, William Daniels is not remembered simply because he remained in the entertainment business for a very long time.

He is remembered because several of the characters he helped create stayed with audiences.

Some fans still hear his voice and immediately imagine a black Pontiac with a glowing red scanner.