Louis is a molehog and the major character in Ice Age 4 and the supporting character in Ice Age 5. He is Peaches' best friend.
Ice Age: Continental Drift
Louis first appears with Peaches in the forest, going towards the falls, where the teenagers hang out. Manny finds them and tells Peaches she shouldn't be out on her own. When Louis tries to point out that she isn't alone, Manny says that he doesn't count, as he is a weiner.
At the end, he rescued Manny, Ellie, Peaches and others from Captain Gutt.
Ice Age: Collision Course
Louis only appears in a small cameo at Peaches' and Julian's wedding party.
Louis gazing lovingly at Peaches
"THIS IS WHY I TRAVEL UNDERGROUND!"
Louis thanks Peaches for saving him
"We're all gonna survive this."
Louis astounded by Crash and Eddie's stupidity towards danger.
Louis overhears Peaches deny their friendship to the mammoths, and sadly leaves her.
"Good to know."
"Let...the mammoth...go!" Louis standing up to Gutt to save Peaches
Louis facing Gutt to rescue Peaches
Louis slams an ice chunk on Gutt's foot to save Peaches.
"Someone once told me no matter what, you never leave a friend behind."