display my images available in one class using another class in webpage

My Code :

class Gallery(models.Model):

    GameName=models.CharField(max_length=40)

    D_text=models.CharField(max_length=50)

    Gime=models.ImageField(upload_to='media/',null=True,blank=True)

    

class Assassin(models.Model):

    Gimage=models.ImageField(upload_to='media/assassin',null=True,blank=True)

    imagegallery=models.ForeignKey('Gallery',on_delete='CASCADE')

  

( In localhost Admin

 imagegallery = Gallery Object 1 )

class Batman(models.Model):

    Gimage=models.ImageField(upload_to='media/batman',null=True,blank=True)

    imagegallery=models.ForeignKey('Gallery',on_delete='CASCADE')   

( In localhost Admin

 imagegallery = Gallery Object 2 )

 How can I link my class "Assassin"  to class "Gallery" object 1 and class "Batman" to class "Gallery" object 2, so that when I call object 1 of Gallery in my Html file the images of Assassin class can also be shown. 

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