Yeah, but that kind of emphasis is largely unnecessary. I know Gardevoir's a protecting Pokemon without needing to be told that. Even if I wasn't, it would be evident from the rest of the poem, which pretty much doesn't leave any doubt. Capitalising GUARD like that really breaks up whatever flow the poem had, which wasn't terribly much to begin with. Same with GARDEVOIR in the last line - sometimes, less is more.
Overall, I didn't think this poem was particularly successful. Some lines just don't even make sense - like 'You GUARD me, like you were meant to be' and 'you protect with your life'. For the first one, I don't even know. There's no 'being' going on in that line, so I can't tell what you're referring to. For the second one, 'protect' is a transitive verb, which means you need an object and a subject. I'm guessing you meant 'you protect me', but without that it just seems a bit clumsy.
The poem gets across your emotional connection with the Pokemon, sure. But it fails because it doesn't give any context or evidence of this connection. There's no mention of Gardevoir actually having to save the Trainer's life, which I think would give a bit more impact. As well as that, the whole 'you guard me, like you were meant to be' thing makes it seem like the Trainer is kind of taking it for granted that his Pokemon will lay down its life for him. As well as that, the constant repetition of 'you protect me, you guard me, you're always there' etc makes it seem like the Trainer is kind of pathetic. There seems to be a lot of reliance on the Pokemon. If that's what you were going for, it could have been a lot clearer. On the whole, this poem was kind of confusing and didn't really go anywhere. There was a story to be told here, but you missed the opportunity.