Pinky's Links
Pinky tends to treat Blu like she is one of her younger sisters, and she's also quite protective of her, though that could also be because they're both part of the Main Trio. Pinky doesn't know that she's one of Blu's role models, though. Because she was originally Fire Type (and still can use Flamethrower), Pinky does think that Blu could learn a move of a different type one day, but it might be an Ice Type move instead.
Blu feels like Pinky is an older sister to her and, with both being part of the Main Trio, she enjoys being with Pinky as well. Blu looks up to Pinky greatly, and does want to be like her someday, especially since both have missing tails (though Blu has a little bob tail as a result of this). Blu also hopes she could use a Fairy Type move someday.