- For fighter info, see Lucas (SSBB).
Lucas is the main protagonist of Mother 3. He is a timid young boy around 7-9 years-old (about 12-13 at the end of the game), that is similar in appearance to Ninten and Ness from the previous EarthBound games. Lucas is Claus's younger twin. After the intro when he grows up, he is drafted by Wess to find Duster and Kumatora. He learns PSI and begins to battle against the Pig Mask Army to be able to pull 4 of the 7 sacred needles to awaken the dragon living under the Nowhere Islands.
In Super Smash Bros. Melee
A popular rumor states that in Super Smash Bros. Melee, Lucas was meant to replace Ness as a playable character, but Ness was included due to time constraints. The rumor was substantiated by Sakurai himself on July 17th, 2001 when he updated the original Melee site with Ness's profile. Quote Sakurai-san:
- ("Actually, at first, I planned to change him [Ness] into the protagonist of MOTHER3 [Lucas], but for various reasons during the delay, I settled back on the original idea.")
Sakurai states that Ness was intended to be replaced by the protagonist of MOTHER3 (Lucas) in Melee, but since MOTHER3 had been delayed--indefinitely, at the time--Ness returned for SSBM. Both Ness and Lucas appear as playable characters in Super Smash Bros. Brawl.
In Super Smash Bros. Brawl
- Main article: Lucas (SSBB)
Lucas has been confirmed to be a new playable character for Super Smash Bros. Brawl, accompanying Ness as a representative of the EarthBound series. His Special Moves have been revealed on the Super Smash Bros. DOJO!! website. The majority of Lucas's Special Moves are much like Ness's moves from the previous two games.  . Ness does in fact return as a hidden character, and his special moves differ only slightly from Lucas's. For example, Lucas's PK Thunder goes through opponents, while Ness's PK Thunder does not, indicating him as a semi-clone, though his other attacks are mostly unique.
One of Lucas's costumes in brawl roughly reflects what his brother, Claus, looks like.
The younger of twin brothers living in Tazmily Village in the Nowhere Islands. He's a kind boy who can communicate with animals, but he's shy and never really got over the tragedy that struck his mother. He fights a warped dictatorship, hunts the Seven Needles, and crosses swords with his missing brother, Claus. In the end, the young boy with psychic PSI powers grows up.
- Mother 3 (2006)
- In Brawl, Lucas should at least be between 12 to 13 years old because he gains his PSI powers sometime after a three-year skip in which he turned this age. His preteen sprites in MOTHER 3 were probably the basis for his model in Brawl.
- Lucas' name is actually an anagram of his brother's name, Claus.
- Lucas's PSI shapes are polygon based compared to Ness' which are circle based. This may just be a way to tell the attacks apart. Most seen in the dash attacks.