Several Kaiju get sent to the world of My Little Pony: Friendship is Magic and get turned into native species. They can still use their original powers, and learn that with practice, they can use the powers of their new body in conjunction with their original powers. However, Godzilla Junior, who was turned into a Unicorn, flat out says he is uninterested in learning how to perform telekinesis or magic and prefers to stick with his original powers. Chibi Moon lectures him that he should be trying to maximize his potential because there might be new enemies that he can't beat as he is now.
In addition, Godzilla Junior is uninterested in learning what happened to his birth parents, as he was an abandoned egg. He says Azusa Gojo and Godzilla Senior are the only parents who matter.
Double Subverted in Sight: Ichigo starts out asking plenty of questions, particularly about Shiba Kaien and why they resemble him so much. However, after stumbling upon the truth, he abruptly stops asking questions, telling Isshin that while he knows who he was, he's leaving it up to him to tell him the rest of the truth on his own time.
Once Gabriel won in Gabriel's Lament, he didn't bother learning who Ladybug had been. After reality was altered by hisWish, he also didn't bother looking for any of the Miraculous again or trying to learn anything else about them, even when Emilie still picked up the Peafowl Pin. This allows somebody else to find the Butterfly Brooch and become this world's version of Hawk Moth... and unlike in his world, there's no Ladybug active, and Gabriel has no way of finding her.
In Chloé's Lament, Chloé assumes thatswapping lives with Marinette ensures that she will become the new reality's Ladybug heroine. When it's not immediately dropped into her lap, she merely looks at the most likely places for it to be delivered, only realizing that it's not coming when she sees footage of Red Queen and Cheshire in action.
Chloé's complete lack of regard for others also stymies what little effort she does make. For instance, while aware of the Guardian's existence, she doesn't recall anything about him beyond the shirt he was wearing; in a side snippet, Wayzz destroys that shirt so that there's no chance of her seeing Master Fu in it and recognizing him based off of that.
