Luigification

Luigification (sometimes called Semi-Cloning) is an unofficial name used in the Super Smash Bros. fan community. It describes a character whose moveset is loosely based on that of an original character's, but is different enough not to be considered a "clone". The term comes from Luigi whose entire special movesets in each installment of the "Smash" series, were variations of Mario's (except for his side special in Super Smash Bros. Melee), but had unique normal moves which differentiated him from being classified as a clone. This is also commonly known as "semi-cloning". Because no character other than Luigi fell into this category previously, these terms are primarily used in reference to characters in exclusively in Super Smash Bros. Brawl. Because this an unofficial term, its use is open to interpretation and is often used broadly. Unlike the official "clone" term used for certain Melee characters, there is no established criteria that determines "Luigification", only the personal opinion of the individual using of the term.

Luigi and Mario
Remaining Clone aspects: Very Few Obviously, their relationship is what coined the term Luigification. In the original Super Smash Bros., Luigi could easily be considered a clone of Mario. However, in Super Smash Bros. Melee, with the addition of the Smash B move, Luigi and Mario were "Luigified" with entirely different standard moves. In Super Smash Bros. Brawl, Luigi and Mario were "Luigified" even further with entirely different Final Smashes and Down Special Moves.

Lucas and Ness
Remaining Clone aspects: Less than half Lucas and Ness share the same basic special moveset, but are "Luigified" by entirely separate normal movesets.

Falco and Fox
Remaining Clone aspects: Slightly below Half Falco was a direct clone of Fox in Super Smash Bros. Melee. Falco's Super Smash Bros. Brawl design underwent several "Luigifying" changes that now largely differentiate his normal moveset. While, Falco's special moveset still remains a cloned version of Fox's, it has been further altered with more differences-- Falco now kicks his Reflector in front of him then retracts it back, instead of generating it around his body like Fox. His Blaster fire is also now colored blue instead of Fox's pink shots. His Up Special, however, seems to have the same initial "fireburst" hitbox while charging, however.

Wolf and Fox
Remaining Clone aspects: Less than half Much like Falco, Wolf's moveset is very loosely based off Fox's and they share the same basic special moveset, though their exact functions are still different from both Fox and Falco. Unlike Falco, Wolf and Fox have completely separate normal moves.

Ganondorf and Captain Falcon
Remaining Clone aspects: Slightly Below Half While Ganondorf's Melee incarnation was a direct clone of Captain Falcon, his Brawl design has undergone several changes that separates him from Captain Falcon. He now has a different Standard Normal attack animation; longer range, a different animation for Warlock Punch, new Side Special: Flame Choke, and altered Up Special has uppercut at end of animation.

Ike and Marth
Remaining Clone aspects: Very low While loosely based off Marth, Ike's high level of Luigification greatly distinguishes himself from Marth. Ike's Eruption move is a variation the Melee version of Marth's Shield Breaker/Roy's Flare Blade, while the Brawl version of Marth's Shield Breaker has been reworked further distinguishing it from Eruption. Ike and Marth's up specials are executed quite differently. The only truly identical move the two share are their down special, Counter. They both have entirely different final smashes.

Toon Link and Link
Remaining Clone aspects: Very high The amount of Toon Link and Link's Luigification is minor at best. Both share their entire special movesets and the vast majority of their normal movesets. Most people would even consider Toon Link the only "true" clone of Brawl...