Tenken

天譴

Tenken is the manifested spirit of Sajin Komamura's Zanpakutō, appearing during the anime-exclusive Zanpakutō Rebellion and the subsequent Toujuu Campaign.
Despite his powerful and intimidating look, he seems to be a very calm individual who has not yet lost his composure. According to Gonryōmaru, Tenken appears to be extremely shy, much like his Shinigami wielder, which accounts for his usual silence. Up to this point, he has spoken only once, uttering the word Bankai in a deep, echoing voice.