Wilson

Wilson is a True Neutral grizzly bear companion exclusive to Baldur's Gate II: Enhanced Edition. He can be found near the entrance of the Heretic Temple if one has talked to Zaviak in the Hidden Refuge. He can be recruited by talking to him, freeing him (by either purchasing him or attacking his captor), and then returning back to the entrance.

In-game biography
"A bear of refined taste and delicate sensibilities, Wilson spent his first five years living an idyllic life in the wild. This was shattered when he was captured by a man named Jolstead, a cruel trapper who sold his animal victims to the highest bidder. Though imprisoned and forced to live in deplorable conditions, Wilson nevertheless retained his innate optimism for the future and a remarkably gentle nature for a bloody great bear."

Personality
Wilson speaks in growls and snorts, which only Gorion's Ward seems to be able to understand. Judging by how they treat him, he is a remarkably gentle, well-spoken, and cheerful grizzly.