Answer:
Squealer is the charatcter that frequently specks with ironic sarcasm
Step-by-step explanation:
He is Nalopean mouth piece and tells lies and tries to make everything better than it is.
Clover secrtly does not trust Nalopean and does not use much if any sarcasm
Boxer does not use sarcasm his, he has two mottos work harder and Nalopean is always right he is (he is one of my favortie charaters)
Snowball does not even stay on animal farm that long he is chased of by a bunch of dog that Naloepon raises in chapter 4 or 5 (sorry do not really remeber) and is used as the escape goat for everything that goes wrong for the rest of the book