Construct Body: "Professor"

You can ride the professor (including indoors) at 179% speed (or maybe 174%, honestly, my DK has 105% normal speed and I don't know if that 5% affects your ride speed on him or not)
It appears you are immune to fall damage when riding him.

The Professor's auto-attack damage is around 62-80. (ridden or not)

When ridden he has 3 spells:
Parchment Storm - strikes nearby targets multiple times for 150 damage. 5 second cooldown. (tooltip says 2 sec)
Final Chapter - does 1,099 Physical damage and stuns enemies within 5 yards for 3 seconds. 30 second cool down.
Sudden insight - increases your primary stat by 5% for 3 minutes. This persists even if you dismount him.

Standard construct health is 58,955
As with all constructs (at the time of this writing) he cannot be used in The Maw, Torghast or pre-Shadowlands content.

Like Flytrap, this construct is rideable. So which one to choose?

Neither takes fall damage or gets dazed.
Flytrap has a higher top speed (faster than ground mounts) however, she must accelerate a few times to reach that speed and cannot do so if you're in combat.
The Professor only has 1 speed, slower than mounts but faster than running. The benefit is that this speed is usable regardless of whether or not you're in combat.

So basically, if you can avoid combat, Flytrap will get you where you're going faster.
If you're worried about getting overwhelmed in a fight and need an exit strategy, The Professor is the way to go.

Tier 2 of the Abomination Factory