The Older Cat here dont even get upset or even curious at a new face if its a Kitten .They just shrug and figure that its someone else to share the treats and beds with.
The Tubster caused a stir as hes big, but except with the Kitten Trio stray Kitten Elly Mae Chistine would hardly rate a second glance.
Taz is going to be a Wonderful Friend to Yoshi and Lucky and I bet that some of Tazs energy and spirit rubs off and makes them Kittens again too.