Tick are a race of insects from the planet Earth. They attach themselves to the body. Destiny expedition met a tick-like insect when they investigated a planet in unnamed galaxy. (SGU: "Pain")
| Biological Classes | Arachnid • Insect • Parasite |
| Alien Bugs | Alien tick • Dust bug • Fire locust • Giant Dragonfly • Giant spider • Infestation fly • Insect killer • Interdimensional creature • Iratus bug • Light bug • Mutated locust • R-75 • Second Childhood • Sleep parasite • Small energy being • Teardrop fly |
| Earth Bugs | Bee • Locust • Mealworm • Mosquito • Scorpion • Spider • Tick |