Pokémon Ranger/Hideout Infiltration!

You need to capture on your way to the Hideout. Then you must capture (he has 15-16 loops now). Capture the and  on your way there (Go-Rock Squad sets this up for you). Capture two, then go across the waterfall with them and recharge your styler with or. From there, go up the rocks (avoiding the Gligar!), release any friend Pokémon and go in.

Hideout Infiltration
Once you get in the hideout, you'll see Chris is there already. He gives you some advice then leaves. Be warned that once you're inside, there's no way out. The alert system's easy – just wait for a pattern to come.