Emoji suggestion :iobound:

[true bone]

To complete the family:

Here is the last remaining possible bottleneck:

In a different font again than all the rest, of course.

Jumbo:

PNG (WTFPL):

[serene kernel]

[mortal mist]

tbh, I think these would be better as stickers than emojis

[dim notch]

mfw I launch a probe at one of jupiter's moons