Given the stream of consciousness rationale, provide a reasonable question and answer. Rationale: The relevant sentence in the passage is: The original commercial features the Gecko, voiced by actor Kelsey Grammer, who climbs onto a microphone on a podium and utters "This is my final plea: I am a gecko, not to be confused with GEICO, which could save you hundreds on car insurance.
The question and answer:
The company's ads sometimes focus on its reptilian mascot, The Gecko, an anthropomorphic Day Gecko created by The Martin Agency, modified in 2005 to a CGI character by Animation Director David Hulin and his team at Framestore. The gecko first appeared in 1999, during the Screen Actors Guild strike that prevented the use of live actors. The original commercial features the Gecko, voiced by actor Kelsey Grammer, who climbs onto a microphone on a podium and utters "This is my final plea: I am a gecko, not to be confused with GEICO, which could save you hundreds on car insurance. So, STOP CALLING ME!", before licking his eye. Later "wrong number" ads used Dave Kelly as the voice of the gecko. In the subsequent commercials with Jake Wood (which portray him as a representative of the company), the gecko speaks with a British Cockney accent, because it would be unexpected, according to Martin Agency's Steve Bassett. In 2010s commercials, the gecko's accent is more working-class, perhaps in an effort to further "humanize" him. "As computer animation got better and as we got to know the character better, we did a few things," says Steve Bassett, creative director at The Martin Agency. "We wanted to make him a little more guy-next-door. And he looks a lot more real than he's looked before." Chelsea Clinton, daughter of former president Bill Clinton and then-Secretary of State and 2016 Democratic Presidential candidate Hillary Clinton, interviewed the Geico Gecko in April 2013. He had since became GEICO's longest-running mascot, appearing in more than 150 commercials as of 2017.

Based on this passage, who provided the voice of the geico insurance company geico in its tv-ad debut?
The answer is Kelsey Grammer