From your guide it may start following Brock, but I'm not too sure about a capture... we haven't seen any of the "followers" being caught before.Originally posted by Zak
Note: Brock does *NOT* catch the heartbreak Spinda, although it seems he deserved and befriended it. Doesn't seem like he exactly wanted it, but still, he should catch it. There is a chance that it will pull a Jigglypuff/Snubbull and follow Brock, and hopefully get caught later, but that's just speculation.