NPCs composing that spawngroup :

Walnut (50%)

NPCs spawning around that spawngroup :
(Max range : 100)

mischiefplane_12, range=70 (146,-169,117)

a_dastardly_rascal (50%)

mischiefplane_32, range=53 (144,-144,73)

a_comical_rat (50%)

mischiefplane_62, range=76 (71,-47,167)

a_harebrained_burglar (50%)

mischiefplane_68, range=31 (80,-92,167)

a_harebrained_burglar (50%)

mischiefplane_70, range=18 (109,-105,166)

a_detached_hand (50%)

mischiefplane_72, range=59 (150,-91,168)

a_backwards_sphinx (50%)

mischiefplane_129, range=83 (74,-39,116)

an_astray_hand (50%)
a_lost_hand (50%)

mischiefplane_131, range=35 (62,-118,118)

a_false_treasure_chest (50%)

mischiefplane_132, range=33 (75,-144,118)

a_false_treasure_chest (50%)

mischiefplane_133, range=52 (51,-145,119)

a_gorilla_scholar (50%)

mischiefplane_134, range=33 (120,-143,116)

mischiefplane_137, range=89 (145,-44,119)

a_gorilla_scholar (50%)

mischiefplaneChesnut00048973508, range=57 (147,-148,167)

Chesnut (50%)

mischiefplaneMees00049136758, range=94 (66,-30,167)

Mees (50%)

mischiefplaneGono00049214514, range=99 (53,-30,167)

Gono (50%)

mischiefplaneKeel00049242516, range=79 (67,-45,167)

Keel (50%)

mischiefplaneUuuz00049292656, range=85 (54,-46,167)

Uuuz (50%)

mischiefplaneChuckles00056868324, range=67 (62,-178,117)

Chuckles (50%)

mischiefplaneBozer_the_Bear00057456419, range=98 (136,-29,117)

Bozer_the_Bear (50%)

mischiefplaneTreasure_Chest00157999277, range=87 (42,-52,117)

Treasure_Chest (50%)

mischiefplaneRatman_Rager00141498202, range=77 (25,-149,72)

a_Ratfink (50%)
a_Ratling (50%)
Ratman_Rager (50%)
Teriling (50%)