Anansi the Spider comes from the Akan. He is the spirit of knowledge and stories and remains one of the more important characters in West African and Caribbean folklore.
The Akan people come from what is now Ghana, but the Atlantic slave trade spread his stories to the West Indies, Suraname, Sierra Leon, and the Netherland Antilles. From there they spread even further through the Americas – sometimes remaining distinct, and sometimes merging with Bantu and indigenous American stories of similar nature.
Anansi himself is a trickster who uses pranks, cunning, and confidence games to get his way rather than brute strength.
It should be noted that this version of Anansi is based on the Anansi tales that have been popularized in America, and should not be considered an accurate reflection of the character from Akan religion.