Peppy Hare

Peppy Hare is one of the three main characters in the Star Fox series. He's an admirable old character who is the only member of the current generation's team Fox who was also a member of the previous one which also consisted of James McCloud (Fox McCloud's father) and Pigma Dengar, who became a traitor and joined Wolf O' Donnell's evil gang.

Currently it can be conclusive that Peppy is the most experienced and knowledgeable of the entire group, often giving all three of his teammates tips. He and his now deceased wife Vivian gave birth to a female bunny named Lucy Hare. In time, Peppy became the new General of the Cornerian army, after the previous one Pepper becomes sick and presumably retires.

In the GameCube video game Star Fox Assault, it at first appeared as if the popular character had died while saving his team's lives by crashing a ship into a hoard of enemies (purposefully). However, near the end of the game it was shown that he in fact managed to survive.

Barrel Role
Peppy Hare is the originator of the insanely popular quote "do a barrel role". The quote was first said in Star Fox 64, where he advised Fox that to easily dodge enemy fire, you must "Do a barrel role!". It can almost be considered a minor meme, rivaling that of popular quotes from major movies such as 300.

Super Smash Bros. Melee
In the GameCube title Super Smash Bros. Melee, Peppy made a minor cameo appearance on the Lylat stage, where he would occasionally come near the stage in his Arwing and shoot either you or your opponents. In adventure mode, you'd hear him talk, explaining that he's come to save Fox McCloud in battle.

He was also one of the 293 (296 in Japan) trophies in the game, along with his fellow team members. It can thus be assumed that he will return in some way or another in the Wii video game Super Smash Bros. Brawl, most likely returning as a trophy, or possibly play an even larger role.