Easter Duche is an enemy found in the annual event stage Spring, Sprang, Sprung. It appears in the 2nd, 4th and 6th stages with the strength magnification of 15%, 100% and 200%, respectively.
This variant of Duche has a cracked egg on his head and is carrying a bowl of eggs. This is probably releated to the Easter event. Compared to Duche, it is HUGE! But he is not huge at attacking like he seems, doing only 3600 damage at 100% strength magnification. He only has 2 knockbacks. It may be a problem for some people who don't have that many strong cats, but if you do it is no big deal.