A transitional fossil should show features which belong to the ancestral group and features which belong to the descendant group.
Creationists necessarily deny that these fossils exist but they expose the lie in their own argument when between them they cannot agree which "kind" a given fossils belongs in.
Is an Archaeopteryx a bird kind or a dinosaur kind? It has a mosaic of characteristics which makes it both.
Where do we draw the line between human kind and ape kind?
Well creationists just can't agree with each other which proves the fact that their features are so mosaic that they do indeed represent a transitional form between "kinds".