This is my record of my Whirlpool outcomes with Onesimos.

Most recent 10:
10 - 1 Defense Stat
11 - 1,545 mp
12 - Nothing Happened
13 - Nothing Happened
14 - Became a Bronze Grint
15 - Became a Blitzen Xoi
16 - 793 mp
17 - 1 Speed Stat
18 - 408 mp
19 - 2 Levels

Totals:
Nothing Happened - 5

MP - 8
-Total: 3.401 mp

Color Change - 1
- Breeze (Newth)

Species Change (Non-LE) - 3
- Grint (Green)
- Grint (Bronze)
- Xoi (Christmas)

Species Change (LE) - 0
-

Gym Stats - 5
- Speed (2)
- Defense (1)
- Level (2)

School Stats - 1
- Music (1)