Utchakkaloch, frequently shortened to Chakk, was a male Wookiee. He was the offspring of Dewlannamapia and considered Han Solo's "adopted brother". This dark brown Wookiee, called Chakk by those close to him, first encountered Han Solo during Chewbacca's marriage ceremony with Mallatobuck. Subsequently, he attended Chewbacca's memorial service. Chakk's lineage was linked to Chewbacca's, specifically as a second cousin three times removed.