In Hurrah for Rapidash, Byron offers to give Shieldon to Diamond after seeing how quickly the Shield Pokémon warmed up to him. Diamond decided to keep him and nicknamed him Don.
With Diamond
In Grumpy Gliscor, Don battled a wildGliscor that was antagonizing Diamond. By rubbing his head off of Tru's tree he was able to increase his defense even farther than normal. Due to this Gliscor hurt its fangs when it bit down on Don, allowing Tru to finish it off.
Don training on Iron Island
In Lucky Lucario I, Riley trained Don, Lax, and Tru on Iron Island. The three started by battling against Riley's Lucario and were quickly defeated due to Lucario's speed. Despite the loss, Riley pointed out that the three have amazing defense and work wonderful together. After this, Riley took the group into a cave, where they were attacked by a wild Steelix. Don and Lax managed to hold it down long enough for Tru to attack with Crunch, making the Steelix flee. After the training Don learned to overcome his weakness in speed.
Don and Diamond
In Chancing Upon Chingling, after Diamond arrived on the Galactic Veilstone Building due to failing to stop Mesprit from being captured by Team Galactic, Don was used to help sneak around the base. Once Diamond was spotted by the Advanced level Grunt, Don participated with Diamond's other Pokémon to battle him but proved to be no match for his strength. Diamond attempted to escape but the Grunt caught up with him and had his Chingling, Staraptor, Gible, Cradily, and Haunter send a massive attack at him. As the attacks came at him, Don stepped in the way and took all five attacks head on. Just when he was about to give out he evolved into a Bastiodon and learned Metal Burst, sending all the damage he took back at his opponents. He then used Iron Head to finish off the ones that remained standing.
In Double Trouble with Dialga and Palkia VI, Don was used alongside the other Pokémon to battle against the Legendary PokémonDialga and Palkia. Using his size, Don was able to do great damage to the Dragons with the help of Diamond and Pearl's Pokémon, and with a combined technique, they were all able to destroy the Red Chains controlling them.
As a Shieldon, Don was stubborn and picky, refusing to bond with Byron no matter how hard he tried. Upon meeting Diamond, however, he quickly grew attached to him. Like his Trainer, Don is gluttonous, lazy, and relaxed. He is a strong battler and has strong defenses, as shown when he took five attacks at once.
In Ancient Family Matters!, Byron mentioned how he had obtained his Bastiodon as an Armor Fossil, which he had revived into a Shieldon and then evolved into its current form.
Trivia
Don took the longest to evolve out of the Sinnoh Pokédex holder's Pokémon, having been a Shieldon for 60 chapters.
Don, in both of his Evolution stages, was the only one of its species to appear in Pokémon Adventures.
Names
Language
Name
Origin
Japanese
ぷー Pū
From タテトプス Tatetops
English, Spanish
Don
From Shieldon
Italian
Don
Same as English
Korean
톱스 Tops
From 방패톱스 Bangpaetops
Chinese (Mandarin)
阿龍 / 阿龙 Ā Lóng
From 盾甲龍 / 盾甲龙 Dùnjiǎlóng
Chinese (Cantonese)
阿龍 A Lùhng
From 盾甲龍 Téuhngaaplùhng
Vietnamese
Puu
Transliteration of his Japanese name
Related articles
For more information on this Pokémon's species, see Shieldon and Bastiodon.