I asked this somewhere else but: Is it wrong to kinda draw inspiration from say, a video game or such? The story that I am planning is going to inspired from that Mario game (Super Princess Peach)... somewhat but yeah.
The more important question is, is it okay for be to portray a legendary Pokemon as not being strong? Meaning the Pokemon can only save the day with help? It's Palkia. The thing is... like the game where Peach defeats Bowser but only with the use of the magic parasol, Palkia defeats Ghetsis and rescues Dialga, but she can only do so with the use of the Adamant Orb; which this orb contains some of Dialga's strength. Which he lends to Palkia to guide her. And with the last villain, Palkia can only defeat him with the move Assistance, which she needs to use Dialga's Roar of Time to defeat it.
tl;dr, how can I make Palkia reliant on others' powers or portray her as weak without readers looking at me weird?