I have a lot of Events, mostly traded as my first official one on Unova was the Keldeo Event (I also have a Genesect). If you're collecting different natures, I can go into detail. I believe the Keldeo is a Jolly one, but I'd have to check the Genesect.
I did also use an Arceus I obtained in SS and used AR to repeat the Sinjoh Ruins Event, so I have all three of Dialga, Palkia, and Giratina at Lv.1 (imported clones to Unova). I have a Wishmaker Jirachi. I have an Oblivia Deoxys and Shaymin. Again, if you have any of those, I could go into natures.
I also have a Flying Pikachu (comes with Light Ball held) and VGC Larvitar. I also have a Mewtwo (I think it's an Event and not caught, have to check), and I also have a Mew (this IS caught in Emerald by its Trainer and references Hoenn in Unova). I also have the Gamestop Celebi but have since generated a new one to replace it using AR because I already used it for the Zorua Event in Castelia City (I have yet to import it from SS only having the used one in Unova, and this used one was traded to me for me to use after it was cloned). I have freshly caught SS catches of Raikou, Entei, and Suicine, and every single Unown; also include the Lv.45 Lugia and Lv.70 Ho-oh (Master Balled as I was very under-leveled and needed it for the Ruins of Alph), the Pewter City Latias and the roaming Latios.
I have more too, that's just off the top of my head. I can look through for others. I do have my own Lv.7 Shiny Nincada caught from Route 116 in Emerald if you are looking for untouched Shinies (original and four clones currently in SS just in case I accidentally trade all Unova clones); it's the only one I've ever caught myself. :) I also received traded Shinies in a Lv.100 Audino and a Lv.70 Sawsbuck, and a Lv.100 Shiny Entei (from the Event, traded to me at that level and it activated Zoroark in Lostlorn). Speaking of Zoroark, I have a movie Event as well (Lv.50).
That's a sample. :)
Cyclone
