Luckily Science, Technology and Astronomy are my prime interests (besides yoyoing).
How about:
The GRB (because of the spikes on the sides)
The Superconductor (no friction :D)
The Higgs
Binary Fusion
Entanglement
O.I. (Original Intelligence)
TGD (The Grandest Design)
VASIMR 2.0
Supersymmetry
LQY (Loop Quantum Yoyo)
The Fermion (half-integer “spin”)
I hope you guys like them ;D
Braxton hicks
Alpha Sensor
Binary Fusion
Linear Equinox
Tri Ti Plane
Gorging Black Hole
Lucky-Star
Planet Starbeam
Lexintaurus
CP
Who won!
The toxic flame
The toxic fire
The toxic toxins
The super toxins
The toxic.
Lol, I got bored…
Phosphorous
Rhizoid
Symbiosis
Secondary Turbine
Troposphere
Gravity Untouched
Greenhouse effect
Electrolysis
snicker
Swing
Dark void
The mitten
Elektrolyte
Void
Copernicus, multiverse
Double helix
String Code (like gene code, but with the word string! mind blown…)
Also shouldn’t this be in the contest section of the forum?
I am back with a lot more.
inertia
cyprus
karisma
photon
quasar
paradox
fresh
sceptrum
spektrum
the juggler
gale
gail
jolt
merridean
gust
shock
tide
high tide
low tide
black hole
cold rings
cool rings
frozen
heat
range
terra
force
blaze
arid
heat
plasma
lighting
bolt
qw2v (quickest way to victory)
blow
breeze
furno
storm
nex
beta
thrust
mechanical
advantage
mechanical advantage
vale
Total Eclipse
Eclipse
Lunar
More names!
Hyperdrive
Nova
Wavefunction
A pretty well-known yoyo by YYF. 
Not to mention a well known Marvel Comics character. ;D
Last day for naming the yoyo:)
Last Days
Antipodal Diurnal Course(Last Day)
Antipodal Juncture,Allotment,Chronology,Epoch,Interval.(Last Day)
Rapture
Doomsday
Illusion
Rage
Fear
Underdog
Maple
Punisher
Flash
