Li'l Bunny is Li'l Wolf's rabbit friend. The rabbit in the early Buettner LW stories is not Thumper, whom Buettner drew very differently. Instead he's this character "Li'l Bunny," who Buettner seems to have intended as LW's confidante before TLP were used regularly. Li'l Bunny has been translated as Thumper sometimes, but he's actually a different character.