Shadow was shocked. "He's not lying! This is my brother! But he's one of the Dark Ones..."  He wanted to believe it, but He also wished it wasn't true. He stared at him for a while and finally he said ''Why did you join the Dark Ones, after what they did to our parents! They're only using you, they don't care if you live or die!"  He was tempted to let him go, but he resisted it, knowing that he was one of The Dark Ones and would immediately attack him, or try to escape.

Manaphy is a Legendary Pokemon.

Lucario is not a Legendary Pokemon.

Legendary status it attributed to any Pokemon that can only be "captured" once in the entire game. Meaning, there is only one.

Does that clear things up?

  does that mean Snorlax is a legendary in HG and SS? I don't think so. You guys are claiming that Manaphy is a legendary, but all other legendaries can not breed. That proves that Manaphy is just a rare pokemon that can breed, like snorlax in SS. Plus, Phione is the pre-evolution of Manaphy, no other legendaries have pre-evolutions. And someone said Lucario is a legendary?! where did you get that from? The movie? you can't judge which pokemon are legendary from the anime, if they made a movie with a legend about a caterpie would you say that it's a legendary?

  Shadow drug Seeq along the ground. He was struggling to keep going. He had lost view of the fighters, so he decided to wander in the general direction they were going, hoping that he would find a base. Then, a thought popped into his head "what if this is my brother?" He quickly dismissed the thought, he had never heard of the Dark Ones sparing someone's life for any reason. His brother must be dead. But still, he had a strange feeling about this Absol...

  "wait, aren't you going to help with Seeq?" he yelled as Luna ran off. He looked at Seeq, noticing he was talking. "what do you mean they"re going to kill us?" He asked. He decided to take him and imprison him. Then it occured to him that he didn't know where a base was. He stood and wondered what to do. Then he heard a Chatot announce that the Dark Ones were retreating, and decided to follow the Fighters, maybe they would lead them to their base.

     ((sorry for not being active for a while, I couldn't get on here, I never had time. Sorry!))

  Shadow noticed Seeq talking. "Why should I?"

  "wait, where'd the Umbreon go?"

Luna forgot how to breathe. She slowly turned to look at the Absol next to her. "S-shadow?" She whispered. She remembered his name, and the fact, that he was Seeq's brother, but not face. He was younger and didn't hang out with her and Seeq.
((Is it OK to make you the younger one...?))

  (yeah, it's fine)