(Source 1: Secret In-Game Scrambled Staff)
..With that said, by using the Up + B trick, here were
the credits posted. Some are empty. Some are actual names.
And some are just plain odd. I give the credit to Dean
Siren for providing the code that displays the credits.
1 — Taromen.1
2 — Jahrastfar
3 — (empty)
4 — Takamen.I
5 — (heart)Nintendo(heart)
6 — (empty)
7 — (empty)
8 — Nintendon
9 — (empty)
10 — Takamen.I
11 — (empty)
12 — (empty)
13 — (empty)
14 — Akemi.Yab(heart)
15 — K.Nakajima
16 — (empty)
17 — Taromen.1
18 — (heart) Oota (heart)
19 — (empty)
20 — (empty)
21 — Taromen.2
22 — (empty)
23 — (empty)
24 — (heart)Yoichiro(heart)
25 — T.Sengokun
26 — (empty)
27 — (heart)(heart)Imakuy.H
28 — (empty)
29 — (empty)
30 — (empty)
31 — (empty)
32 — J !!
33 — (heart) 8000 (heart)
34 — (empty)
35 — (heart)Nintendo(heart)
36 — (heart)Nukamura(heart)
37 — (empty)
38 — Espina
39 — T.Nakamura
40 — (empty)
41 — (empty)
42 — T.Nakamura
43 — I(heart)Tomoyo
44 — (empty)
45 — (empty)
46 — Suzuki(heart)
47 — Toshiyuki!
48 — Suzuki
49 — Momo(heart)Mami
50 — Taromen.1
51 — (empty)
52 — Akina(heart)Chan
53 — (empty)
54 — (empty)
55 — Taromen.2
56 — (empty)
57 — (empty)
58 — (10 hearts)
59 — (empty)
60 — (empty)
61 — !!!!!!!!!!
62 — Try It!
63 — (empty)
64 — (empty)
65 — (heart)Sobajima(heart)
66 — (heart)Miku(heart)Chan
67 — (empty)
68 — (empty)
69 — (empty)
70 — (empty)
71 — Haccyotaro
72 — (empty)
73 — (empty)
74 — (empty)
75 — I(heart)Seiko
76 — Meshijima(heart)
77 — Y.S(heart)Akina!
78 — Nakamura
79 — Toshiyuki
80 — (heart)K.Iijima(heart)
81 — - Xvzvlj -
82 — (empty)
83 — T.N(heart)Tomoyo
84 — Yoichiro.S
85 — Takamen.I
86 — 82-1109T.N
87 — (empty)
88 — Kunio!
89 — (heart)Nantendo(heart)
90 — Jahrastfar
91 — Memoru(heart)h.s
92 — Kyotaro(heart)
93 — Y.Sobajima
94 — K.Nakajima
95 — Toshi-Hide
96 — Zurimen.1
97 — (empty)
98 — T.Nakamura
99 — (heart) Hideo! (heart)
100 — Good-Bye
Staff Reveal: Toshiyuki Nakamura (aka Tomoyo Chan), Kenji Nakamura, Yoshio Sakamoto, Toshio Sengoku
(Source 2)
Hirokazu Tanaka's official homepage cites Wrecking Crew as his work. Yoshio Sakamoto's Wired Interview reveals his design work on Wrecking Crew.