Pros:
- Binds with a host on a molecular level (Becomes irreversible after a week.)
- Can sense and communicate mentally with other goos (Only if the two hosts both want to talk to each other.)
- Ability to make tendrils, stretch, flatten or liquify self. (It feels like a massage to the body, a little ticklish.)
- Host is immortal once bonded with goo (After 1 week.)
- Rapid regeneration (Pain does not last long, mostly a minute if injected with neurotoxin.)
- Host retains body and mentality (Nothing of the physical body is left but host can sense, taste, feel, sleep, wake up for the 9-5 job still weakened by the shift last night, with the new goo body minus the extra voice in their head.)
- Host abilities are adapted to the goo (Which can make it stronger or weaker depending on the abilities. If the host have fire resistance abilities then the goo becomes resistant to fire, like Lazarus, but he can still freeze.)
- Host & goo smells like a small hint of vanilla inside out. (They emit this smell as it is not repulsive to most people and sometimes attracts host, this also affects the host's sexual desires especially with a love one.)
- Goo becomes the host's extended consciousness and adds to the decision factor. (Goos can speak out loud but the host can always tell it to speak in their mind if they are in public. What the host like, hate or fear is the same with the goo. Though the goo has it's own preferences as well, it's minor and most likely is agreed upon by the host as it is still affected by the host's mind.)
- Host does not produce waste, no poop or pee. That doesn't mean they can't breathe / exhale carbon dioxide, sweat to cool down or burp from a fizzy soda as they still need and do that. The goo's waste digestion spares nothing which means the goo can eat mostly anything or anyone with nutrition and can even work as a filter feeder or discarded food eater. Only the host is choosy with what they eat and they will feel full if they have eaten well, they can also control their digestive acids in their stomach if they ever want to wrap with a new host and bond with them or just wrap someone alive.)
- The host has the ability to conceal parts of itself for protection or sometimes just decency. (They can cover their face butthole and genitals with the goo suit, their buttholes are just the leftover of their mortality and serves no purpose, except buttsex.)

Cons:
- Reproduction requires 2 hosts (male and female bonded with a goo, same sex does not work.)
- Intentional damage to goo hurts the host and goo. (Unintentional separation or splitting apart won't hurt.)
- Sound cannons makes goos melt (But that's about it. It doesn't kill it or the host, it just forces them to a liquid form that they can still use to move. Could be great if you want to catch them and put them in a big jar) (You can also use it to separate a host from the goo if the two has not yet been together for a week but it will cause permanent hearing loss to the host.)
- Resistance to fire (Up to 1600°C and after that, the goo will sustain damage till the host and goo dies if not removed from heat source.)
- Resistance to cold (Up to -40°C and after that, the goo freezes with the host and remain dormant till unfrosted.)
- Immortality (Eventually, they either become crazy, gods, philosophers, keepers of knowledge, just plain themselves or goos with the choice of the host separating from the main goo (which is also a way the goo reproduce but this instances are rare.)
- Memories tops out at 2.5 petabytes (Eventually they have to forget something.)
- Venom from any venomous animal coagulates the goo temporarily (It requires a potent enough venom to reduce them to a coagulated mess for at least a few hours. Host will feel numbness of the body till fully recovered.) (Boomslang venom is pretty effective)
- Any human sickness still affects the host (They heal quickly so it isn't a problem, only a few days sick then they're good, sadly, it only works with the host.)
- Any host that has developed a stage 5 cancer then bonded with a goo will turn into the devourers, the host will be alive but if the host is not removed within the week, the goo will devour it and anything else with it and it will continue to grow until everything is devoured. A flame thrower will work with dispatching the goo but it can't be returned to its passive state, nuclear weapons are advised if it grows as big as a city, thankfully, it can't infect other goos and hosts but it will slowly eat and kill them if they're not careful. Any host that are cured from stage 5 cancer, or have stage 4 cancer or lower can be bonded with a goo safely. Any other stages of cancer won't affect the goo and will successfully cure the afflicted. Yeah, cancer is a bitch but in this universe, a cure is possible but there's not enough.)
- A goo can dislike a user and leave them within a week so it must like you which should not be hard since they are very friendly and only defensive if they feel threatened. This does not say that some goos don't have some quirky or evil traits.