Here's one

Fafnir- Found in a deep cave, it appears to be three long necks coming straight out of the ground, with a one eyed head on the end of each. The colossus is immobile- the heads will take turns to fire energy blasts where Wanda is out of range. The two heads left to right will try to smash down on Wanda if he gets close, & they have no fur to climb. On either side of the creature there'd be two large rock falls. To defeat the colossus, Wanda would have to lure each of the heads to striking the rock falls, collapsing rocks on the heads & disabling them. Only then will the central head try to smash Wanda, & that head has fur to climb & a sigil to attack. Being a single long neck the colossus would be able to thrash violently to try & dislodge Wanda, but it would only have the one sigil to destroy.

Venir

Mostly based on the Egyptian god Ammit, with a hippo-lion like body, along with hooves as well. I haven't designed it yet, it's just something I came up with.

I had some inspiration for there to be a colossi with a lantern, but I’m not sure how it would work, if anyone wants to suggest something

Also, a collossus themed after a crocodile

Pygmaeus- Orangutan shaped colossus. Smaller than most colossi, about ten metres tall. Extraordinary long arms but virtually no legs, the colossus uses its arms to swing its body forward with each step. The arms can slap the ground from a great distance away. If Wanda gets close it will lift its body in the air and slam it down again as an attack. While lifted in the air, glowing weak points will appear on its wrists. Shooting both these points will cause the colossus to collapse onto its back. At this time, the sigil on its belly will be vulnerable. Another sigil can be found on its back, which can be climbed without effort, though the colossus will shake violently to dislodge Wanda

Ah, just though. What about a stag like colossus? Huge horns to sweep Wanda away, with sigils on platforms on top of each antler