One of the hardest things to figure out about training a Druddigon is how to show them affection. Their spiky scales which protect make these pokemon so frustrating to battle make them equally painful to embrace, pet, or even high-five after a victory, and trainers who persist in these efforts can find themselves bleeding from their hand or cheek to their beloved pokemon's horror. Although some have attempted to tame the Druddigon with special gloves, these have only ever reduced the pain, for there is no substance known to man or pokemon capable of shielding one's body from a Druddigon's scales on contact.
Some Druddigon trainers have alleged that this is because Druddigon do not care for the warmth of a friendly touch, which virtually all living pokemon appreciate, but these claims are motivated more by the claimers' own aversion to pain than by any biological insight; their Druddigon never fight to the level of their potential. Although Druddigon are extremely willing to utilize their spikes to aid their power in battle, these pokemon also consider them a test of friendship. The only people who Druddigon consider worthy to follow into battle are those willing to endure the pain of their texture and treat them as warmly as they do any other pokemon.
Druddigon are as remarkable for how their spikes equalize as for the actual damage they cause; whether Shuckle, Magikarp, or human, any creature who touches these pokemon feels a virtually identical amount of pain. This is partially because Druddigon whose spikes grow too sharp are understandably unable to mate, and partially because even before humanity, Druddigon often came to see members of other species as friends, and feared maiming them as much as they loved maiming (or better yet, scaring away) their foes.