The idea of people capturing monsters, or training pets simply DOES NOT fit into the realm of Spiral Knights!
In trying to keep with the theme or sci-fi/steampunk, we should be looking for creative alternates, such as:
1) Build a drone/robot-ish thing that follows you. (you make/buy/find upgrades)
2) Bribe friendly creatures in levels by feeding them Mist/CE.
3) Customizing your own Mecha-Kight, and ACTUALLY MAKING THEM USEFUL! (Maybe adding gun/bomb upgrades?)
In short, my suggestion is to stop obsessing about pets.
Instead, become like Jim-Dale and recruit a cultist following.
Haha lol, I think you should alter your topic name xD