As time has went on, more varieties of fictional character have appeared as monsters in Yu-Gi-Oh
In cases like this, it is mandatory for the player to use sleeves to prevent their cards from being marked
8 Crustle (Gen 5) Ancient Roar Card 67/66 Featuring a cast of Crustles attempting to avoid the rain by huddling inside a cave, the Secret Rare variant of the Crustle card from the Ancient Roar series is a beautiful card with an exceptional grasp on the artistic principles of color
If the copied creature is copying something else (for example, if the copied creature is an Evil Twin), then the token enters the battlefield as whatever that creature copied
since you need to keep Graveyard decks honest 1 graveyard hate
Another point that I consider the most important is that Heart of the Underdog can serve as a way to introduce new players to the game, taking advantage of the fact that it is a format with a low-power ceiling, and that it is possible to have good results using decks with reasonable prices