A1) Its Jinenji! InuYasha and Kagome first met Jinenji & his human mother in episode 31 ("Jinenji, Kind Yet Sad") looking for an special antidote for Kirara after being poisoned by Naraku from previous episode 30. Then he reappears again in Episode 96 - "Jaken gets ill" which it is the second time for InuYasha and Kagome & the first time for Miroku, Sango, Shippo & Kirara to first meet Jinenji. And also he reappears the last time in the ending of InuYasha the Final Act Episode 26, helping Kagome learning & gathering more medicinal herbs. He was also mentioned in Episode 107 & Final Act Episode 24.