Aki

Autumn is one of the Maid Café sisters and a character of the day who appeared in the Pokémon the Series: Diamond and Pearl episode Tanks for the Memories! (DP062). She seems to have a crush on . Unfortunately, Brock is more interested in her older sisters, and .

Because of her clumsiness, Autumn initially had trouble developing a bond with her Miltank named Ilta. She was convinced that she would never get to know Ilta and wanted to release her. However, Brock convinced Autumn to let him teach her how to grow closer to her Pokémon. A lot of the training didn't work, but when she jumped in the way to protect Ilta from a swarm of Beedrill, Ilta realized that Autumn cared for her and began listening to her instructions.

She reappeared in the ending credits montage of Memories are Made of Bliss! (DP191).

(Source: Bulbapedia)