What is "thundercat"

Thundercat was originally the name of a series of snowmobiles produced by Arctic Cat from 1993 to 2002. In 2007, Arctic Cat re-introduced the name for a line of all-terrain vehicles.

Stephen Bruner (born October 19, 1984), better known by his stage name Thundercat, is an American multi-genre bass player, producer and singer from Los Angeles, California. He has released three solo albums, and is most noted for his work with producer Flying Lotus, and crossover thrash band Suicidal Tendencies. Thundercat appeared on Kendrick Lamar's critically acclaimed 2015 album To Pimp a Butterfly. Thundercat won a Grammy in 2016 for Best Rap/Sung Collaboration for his work on the track " These Walls" from To Pimp a Butterfly.