Jerry Quy worked in the role donning the much-loved dinosaur suit for 27 years before he was one of 55 staff to be made redundant in a cost-cutting exercise by the club last month.
Asked by So Foot how he took the news, Wenger responded: "Badly. The decision was financially unjustifiable. I don't know what got into them.
"No one can understand it. Everyone who loves Arsenal didn't take the decision well. I'm part of them.
“They laid off 55 people, which could possibly be explained by a certain reorganisation, a desire for efficiency. The mascot cannot be justified by a desire to rebalance finances. It's incomprehensible."