Sebastian Benedict Granfon Arumpac (born August 22, 2012) also known by his nicknames Baste Granfon and Bae-by Baste, is a Filipino child actor, television host, and singer.

He was the youngest host in the roster of presenters of the longest-running noontime variety show Eat Bulaga!.

He first appeared in Kapuso Mo, Jessica Soho on July 19, 2015 as one of the featured segments of the news magazine television show.

Now he is a co-host of the longest-running noontime variety show in the Philippines, Eat Bulaga!

On August 19, 2017 during his 5th birthday celebration on Eat Bulaga!, Vic Sotto announced that Baste will be dubbed as the new "Youngest recording artist" of the country because he will be having his own dance single entitled "Bastelicious", which he performed live on Eat Bulaga!