Espade

Espade is the het ship between Espio the Chameleon and Shade the Echidna from the Sonic the Hedgehog fandom.

Canon
Espio serves as an intelligent ninja warrior and member of the Team Chaotix Detective Agency, while Shade is an agent, spy and the lead member of the Marauder forces.

As Espio does not appear in Sonic Chronicles: The Dark Brotherhood or its comic adaptation, Shade's only appearances, the two have never met. Due to Ken Penders' lawsuit against Sega and Shade's similarities to his character Julie-Su, it is unlikely Shade will appear again, meaning Espio and Shade will most likely never meet.

The closest mutual associate of the two is likely Knuckles the Echidna. Knuckles and Shade had a close friendship in Sonic Chronicles after she joined forces with Sonic and his friends. Knuckles was originally a member of the Chaotix, and as such, could team up with him in Knuckles' Chaotix.

Fanon
This ship is considered a rare-pairing in the Sonic fandom. The ship is less popular for both characters compared to its rival ships like Espionia and Knuxade. As it is an uncommon pairing, and does not have a tag on AO3 at the moment.

On DeviantArt, content of the pairing exists, but it is rare. User LonelyChocolatChip has created ship art of Espade. A stamp of the pairing has been made by knightspeed199, who has made stamps for some Sonic pairings (but it has been deleted). However another Deviantart user, ShizukanaMono, has made a few stamps for the ship.

Both characters have a couple attributes in common. Both are serious, intelligent, stealthy fighters (as Espio is a ninja with the ability to turn invisible and Shade is highly trained in the arts of stealth due to being a former Nocturnus Clan spy) and specialize/use weapons for combat (Espio with a kunai and Shade with Nocturnus Clan's high-tech weaponry). These common traits is might have what motivated some to ship this pairing.

Fandom
FAN FICTION
 * Espio/Shade tag on FanFiction.Net

DEVIANTART