Despite the domain name, that comic was not written by an economist; it's a political polemic that repeatedly argues that any argument by an economist must be suspicious (which apart from being false is also incredibly lazy, since there are plenty of economists to source for arguments against TPP).
It's also hard to comprehend:
* It has an extended segment about the trade deficit between the US and China and its impact on the valuation of the Yuan, despite the fact that China is not a party to the TPP.
* It argues that TPP will enable the US to outsource jobs to Asia, but the US already can outsource jobs to Asia, and for the most part has outsourced every job that's economical to outsource.
* Something about how the finance industry is a sentient evil robot, and now, to understand how that applies to the TPP, let's replace the robot with a country... let's say China.
If this is where you're getting your information on TPP, it's no wonder you're emotional about it. Try Dean Baker at CEPR. Don't worry: he also fiercely opposes TPP.