A classy seal who attacks quickly, endures attacks without flinching, and deals decent damage. It is recommended to use defensive cat units in tandem with fast-hitting units to defeat this enemy. Using a couple of Whale Cats against this seal works too... for a while. After that, it's best to defend a platoon of Dragon Cats with a few blocking troops. Usually not a major threat in most levels, but there are exceptions such as Ancient One Piece and Angry Fighting.
At the first time you meet Sir Seal in Greece, use Axe Cat combined with meatshields, Fish Cat and Lizard Cat. This way, Sir Seal will be defeated quickly and easily.
Later on in SoL, Sir Seal will most likely get highly buffed (i.e. Upset Rock) so use strong anti reds such as Whale Cat/Island Cat. If you have an anti-red Uber, Sir seal becomes much more manageable.
Sir Seal is actually extremely easy to deal with in later SoL, due to it having mostly mediocre stats.
Came to the big city from the quiet seaside. Wanted more attention so dyed his body red.